Astronomical Sky Calendar for Jan - Dec 2026

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***** 2026 JANUARY ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Thu Jan 01/Fri Jan 02 1042.9 6 26 21 18 04 19 13 5 39 6 47 1 38 12 06 16 10 6 36 98 5 50.4 28 24 Fri Jan 02/Sat Jan 03 1043.9 6 30 17 18 05 19 13 5 39 6 48 1 43 12 10 17 18 7 38 100 6 58.9 27 11 Sat Jan 03/Sun Jan 04 1044.9 6 34 14 18 05 19 14 5 39 6 48 1 48 12 15 18 27 ..... 98 8 03.9 24 02 Sun Jan 04/Mon Jan 05 1045.9 6 38 10 18 06 19 15 5 40 6 48 1 52 12 19 19 34 ..... 94 9 03.5 19 25 Mon Jan 05/Tue Jan 06 1046.9 6 42 07 18 07 19 15 5 40 6 49 1 57 12 23 20 36 ..... 88 9 57.8 13 51 Tue Jan 06/Wed Jan 07 1047.9 6 46 03 18 07 19 16 5 40 6 49 2 01 12 27 21 33 ..... 80 10 47.6 7 48 Wed Jan 07/Thu Jan 08 1048.9 6 50 00 18 08 19 16 5 41 6 49 2 06 12 32 22 26 ..... 71 11 34.2 1 39 Thu Jan 08/Fri Jan 09 1049.9 6 53 56 18 09 19 17 5 41 6 49 2 10 12 36 23 18 ..... 61 12 19.0 - 4 22 Fri Jan 09/Sat Jan 10 1050.9 6 57 53 18 09 19 18 5 41 6 49 2 15 12 40 0 08 ..... 52 13 03.1 -10 02 Sat Jan 10/Sun Jan 11 1051.9 7 01 50 18 10 19 18 5 41 6 50 2 19 12 44 0 58 ..... 42 13 47.7 -15 12 Sun Jan 11/Mon Jan 12 1052.9 7 05 46 18 11 19 19 5 42 6 50 2 24 12 48 1 48 ..... 33 14 33.6 -19 43 Mon Jan 12/Tue Jan 13 1053.9 7 09 43 18 11 19 19 5 42 6 50 2 28 12 52 2 41 ..... 24 15 21.4 -23 26 Tue Jan 13/Wed Jan 14 1054.9 7 13 39 18 12 19 20 5 42 6 50 2 33 12 57 3 34 ..... 17 16 11.5 -26 11 Wed Jan 14/Thu Jan 15 1055.9 7 17 36 18 13 19 20 5 42 6 50 2 37 13 01 4 28 ..... 11 17 03.7 -27 49 Thu Jan 15/Fri Jan 16 1056.9 7 21 32 18 13 19 21 5 42 6 50 2 42 13 05 5 20 ..... 6 17 57.3 -28 10 Fri Jan 16/Sat Jan 17 1057.9 7 25 29 18 14 19 21 5 42 6 50 2 46 13 09 6 11 16 36 2 18 51.3 -27 12 Sat Jan 17/Sun Jan 18 1058.9 7 29 25 18 14 19 22 5 42 6 50 2 51 13 13 6 57 17 31 0 19 44.4 -24 56 Sun Jan 18/Mon Jan 19 1059.9 7 33 22 18 15 19 23 5 42 6 50 2 55 13 17 7 40 18 28 0 20 36.0 -21 28 Mon Jan 19/Tue Jan 20 1060.9 7 37 19 18 16 19 23 5 43 6 50 3 00 13 21 ..... 19 24 2 21 25.7 -16 59 Tue Jan 20/Wed Jan 21 1061.9 7 41 15 18 16 19 24 5 43 6 50 3 04 13 25 ..... 20 18 7 22 13.7 -11 41 Wed Jan 21/Thu Jan 22 1062.9 7 45 12 18 17 19 24 5 43 6 50 3 09 13 29 ..... 21 12 13 23 00.5 - 5 47 Thu Jan 22/Fri Jan 23 1063.9 7 49 08 18 18 19 25 5 43 6 50 3 13 13 33 ..... 22 06 21 23 47.2 0 27 Fri Jan 23/Sat Jan 24 1064.9 7 53 05 18 18 19 25 5 42 6 50 3 18 13 37 ..... 23 02 30 0 34.8 6 47 Sat Jan 24/Sun Jan 25 1065.9 7 57 01 18 19 19 26 5 42 6 49 3 22 13 40 ..... 23 59 40 1 24.5 12 56 Sun Jan 25/Mon Jan 26 1066.9 8 00 58 18 19 19 26 5 42 6 49 3 27 13 44 ..... 1 00 52 2 17.6 18 34 Mon Jan 26/Tue Jan 27 1067.9 8 04 54 18 20 19 27 5 42 6 49 3 31 13 48 ..... 2 05 63 3 15.0 23 17 Tue Jan 27/Wed Jan 28 1068.9 8 08 51 18 21 19 27 5 42 6 49 3 35 13 52 ..... 3 12 74 4 17.1 26 40 Wed Jan 28/Thu Jan 29 1069.9 8 12 48 18 21 19 28 5 42 6 49 3 40 13 56 ..... 4 18 83 5 22.7 28 19 Thu Jan 29/Fri Jan 30 1070.9 8 16 44 18 22 19 28 5 42 6 48 3 44 14 00 ..... 5 21 91 6 29.5 27 57 Fri Jan 30/Sat Jan 31 1071.9 8 20 41 18 22 19 29 5 42 6 48 3 49 14 03 ..... 6 17 97 7 34.8 25 37 Sat Jan 31/Sun Feb 01 1072.9 8 24 37 18 23 19 29 5 41 6 48 3 53 14 07 17 12 7 06 100 8 36.2 21 36
***** 2026 FEBRUARY ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Sun Feb 01/Mon Feb 02 1073.9 8 28 34 18 23 19 30 5 41 6 47 3 58 14 11 18 16 ..... 100 9 32.9 16 22 Mon Feb 02/Tue Feb 03 1074.9 8 32 30 18 24 19 30 5 41 6 47 4 02 14 14 19 16 ..... 97 10 25.2 10 23 Tue Feb 03/Wed Feb 04 1075.9 8 36 27 18 25 19 31 5 41 6 47 4 06 14 18 20 12 ..... 92 11 14.0 4 06 Wed Feb 04/Thu Feb 05 1076.9 8 40 23 18 25 19 31 5 40 6 46 4 11 14 22 21 06 ..... 86 12 00.6 - 2 11 Thu Feb 05/Fri Feb 06 1077.9 8 44 20 18 26 19 32 5 40 6 46 4 15 14 25 21 57 ..... 78 12 46.1 - 8 11 Fri Feb 06/Sat Feb 07 1078.9 8 48 17 18 26 19 32 5 40 6 46 4 20 14 29 22 48 ..... 69 13 31.5 -13 42 Sat Feb 07/Sun Feb 08 1079.9 8 52 13 18 27 19 32 5 39 6 45 4 24 14 33 23 40 ..... 60 14 17.8 -18 33 Sun Feb 08/Mon Feb 09 1080.9 8 56 10 18 27 19 33 5 39 6 45 4 28 14 36 0 32 ..... 50 15 05.8 -22 37 Mon Feb 09/Tue Feb 10 1081.9 9 00 06 18 28 19 33 5 39 6 44 4 33 14 40 1 25 ..... 41 15 55.7 -25 42 Tue Feb 10/Wed Feb 11 1082.9 9 04 03 18 28 19 34 5 38 6 44 4 37 14 43 2 19 ..... 32 16 47.6 -27 41 Wed Feb 11/Thu Feb 12 1083.9 9 07 59 18 29 19 34 5 38 6 43 4 41 14 47 3 12 ..... 24 17 40.9 -28 25 Thu Feb 12/Fri Feb 13 1084.9 9 11 56 18 29 19 34 5 37 6 43 4 46 14 50 4 03 ..... 16 18 34.9 -27 50 Fri Feb 13/Sat Feb 14 1085.9 9 15 52 18 30 19 35 5 37 6 42 4 50 14 54 4 51 ..... 10 19 28.5 -25 56 Sat Feb 14/Sun Feb 15 1086.9 9 19 49 18 30 19 35 5 37 6 42 4 54 14 57 5 35 ..... 5 20 20.9 -22 47 Sun Feb 15/Mon Feb 16 1087.9 9 23 46 18 31 19 36 5 36 6 41 4 59 15 01 6 17 17 13 1 21 11.5 -18 31 Mon Feb 16/Tue Feb 17 1088.9 9 27 42 18 31 19 36 5 36 6 40 5 03 15 04 6 55 18 10 0 22 00.6 -13 20 Tue Feb 17/Wed Feb 18 1089.9 9 31 39 18 31 19 36 5 35 6 40 5 07 15 08 7 31 19 05 1 22 48.4 - 7 29 Wed Feb 18/Thu Feb 19 1090.9 9 35 35 18 32 19 37 5 34 6 39 5 12 15 11 ..... 20 00 4 23 35.8 - 1 11 Thu Feb 19/Fri Feb 20 1091.9 9 39 32 18 32 19 37 5 34 6 39 5 16 15 14 ..... 20 56 9 0 23.7 5 15 Fri Feb 20/Sat Feb 21 1092.9 9 43 28 18 33 19 37 5 33 6 38 5 20 15 18 ..... 21 54 17 1 13.3 11 32 Sat Feb 21/Sun Feb 22 1093.9 9 47 25 18 33 19 38 5 33 6 37 5 24 15 21 ..... 22 54 26 2 05.6 17 19 Sun Feb 22/Mon Feb 23 1094.9 9 51 21 18 33 19 38 5 32 6 37 5 29 15 24 ..... 23 58 37 3 01.6 22 15 Mon Feb 23/Tue Feb 24 1095.9 9 55 18 18 34 19 38 5 31 6 36 5 33 15 28 ..... 1 03 48 4 01.5 25 55 Tue Feb 24/Wed Feb 25 1096.9 9 59 15 18 34 19 39 5 31 6 35 5 37 15 31 ..... 2 09 59 5 04.6 27 58 Wed Feb 25/Thu Feb 26 1097.9 10 03 11 18 35 19 39 5 30 6 35 5 42 15 34 ..... 3 12 70 6 09.3 28 11 Thu Feb 26/Fri Feb 27 1098.9 10 07 08 18 35 19 39 5 29 6 34 5 46 15 38 ..... 4 09 80 7 13.1 26 30 Fri Feb 27/Sat Feb 28 1099.9 10 11 04 18 35 19 40 5 29 6 33 5 50 15 41 ..... 4 59 89 8 14.0 23 07 Sat Feb 28/Sun Mar 01 1100.9 10 15 01 18 36 19 40 5 28 6 32 5 54 15 44 ..... 5 43 95 9 11.0 18 24
***** 2026 MARCH ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Sun Mar 01/Mon Mar 02 1101.9 10 18 57 18 36 19 40 5 27 6 32 5 59 15 47 17 02 6 22 99 10 03.9 12 45 Mon Mar 02/Tue Mar 03 1102.9 10 22 54 18 36 19 41 5 27 6 31 6 03 15 50 17 59 6 58 100 10 53.6 6 35 Tue Mar 03/Wed Mar 04 1103.9 10 26 50 18 37 19 41 5 26 6 30 6 07 15 54 18 53 ..... 99 11 41.1 0 15 Wed Mar 04/Thu Mar 05 1104.9 10 30 47 18 37 19 41 5 25 6 29 6 11 15 57 19 46 ..... 96 12 27.3 - 5 57 Thu Mar 05/Fri Mar 06 1105.9 10 34 44 18 37 19 42 5 24 6 29 6 16 16 00 20 37 ..... 91 13 13.3 -11 47 Fri Mar 06/Sat Mar 07 1106.9 10 38 40 18 38 19 42 5 24 6 28 6 20 16 03 21 29 ..... 84 14 00.1 -17 00 Sat Mar 07/Sun Mar 08 1107.9 10 42 37 18 38 19 42 5 23 6 27 6 24 16 06 22 22 ..... 76 14 48.2 -21 27 Sun Mar 08/Mon Mar 09 1108.9 10 46 33 18 38 19 43 5 22 6 26 6 28 16 09 23 15 ..... 68 15 38.1 -24 56 Mon Mar 09/Tue Mar 10 1109.9 10 50 30 18 39 19 43 5 21 6 25 6 33 16 13 0 09 ..... 59 16 29.9 -27 20 Tue Mar 10/Wed Mar 11 1110.9 10 54 26 18 39 19 43 5 20 6 25 6 37 16 16 1 02 ..... 49 17 23.1 -28 30 Wed Mar 11/Thu Mar 12 1111.9 10 58 23 18 39 19 43 5 20 6 24 6 41 16 19 1 54 ..... 40 18 16.9 -28 21 Thu Mar 12/Fri Mar 13 1112.9 11 02 19 18 40 19 44 5 19 6 23 6 45 16 22 2 43 ..... 31 19 10.6 -26 54 Fri Mar 13/Sat Mar 14 1113.9 11 06 16 18 40 19 44 5 18 6 22 6 50 16 25 3 28 ..... 22 20 03.1 -24 10 Sat Mar 14/Sun Mar 15 1114.9 11 10 13 18 40 19 44 5 17 6 21 6 54 16 28 4 10 ..... 14 20 54.2 -20 18 Sun Mar 15/Mon Mar 16 1115.9 11 14 09 18 40 19 45 5 16 6 20 6 58 16 31 4 50 ..... 8 21 43.7 -15 25 Mon Mar 16/Tue Mar 17 1116.9 11 18 06 18 41 19 45 5 15 6 19 7 02 16 34 5 27 16 52 3 22 32.1 - 9 45 Tue Mar 17/Wed Mar 18 1117.9 11 22 02 18 41 19 45 5 14 6 19 7 07 16 37 6 03 17 48 1 23 20.1 - 3 31 Wed Mar 18/Thu Mar 19 1118.9 11 25 59 18 41 19 46 5 13 6 18 7 11 16 40 6 40 18 44 0 0 08.6 3 00 Thu Mar 19/Fri Mar 20 1119.9 11 29 55 18 42 19 46 5 13 6 17 7 15 16 43 ..... 19 43 2 0 58.7 9 30 Fri Mar 20/Sat Mar 21 1120.9 11 33 52 18 42 19 46 5 12 6 16 7 19 16 46 ..... 20 44 7 1 51.3 15 35 Sat Mar 21/Sun Mar 22 1121.9 11 37 48 18 42 19 47 5 11 6 15 7 24 16 49 ..... 21 48 14 2 47.4 20 53 Sun Mar 22/Mon Mar 23 1122.9 11 41 45 18 42 19 47 5 10 6 14 7 28 16 52 ..... 22 55 23 3 47.2 24 56 Mon Mar 23/Tue Mar 24 1123.9 11 45 42 18 43 19 47 5 09 6 13 7 32 16 55 ..... 0 02 34 4 50.0 27 24 Tue Mar 24/Wed Mar 25 1124.9 11 49 38 18 43 19 47 5 08 6 13 7 36 16 59 ..... 1 06 45 5 54.3 28 02 Wed Mar 25/Thu Mar 26 1125.9 11 53 35 18 43 19 48 5 07 6 12 7 41 17 02 ..... 2 04 56 6 57.7 26 49 Thu Mar 26/Fri Mar 27 1126.9 11 57 31 18 43 19 48 5 06 6 11 7 45 17 05 ..... 2 56 67 7 58.3 23 54 Fri Mar 27/Sat Mar 28 1127.9 12 01 28 18 44 19 48 5 05 6 10 7 49 17 08 ..... 3 41 77 8 54.9 19 37 Sat Mar 28/Sun Mar 29 1128.9 12 05 24 18 44 19 49 5 04 6 09 7 53 17 11 ..... 4 21 86 9 47.6 14 21 Sun Mar 29/Mon Mar 30 1129.9 12 09 21 18 44 19 49 5 03 6 08 7 58 17 14 ..... 4 57 92 10 37.1 8 28 Mon Mar 30/Tue Mar 31 1130.9 12 13 17 18 45 19 49 5 02 6 07 8 02 17 17 ..... 5 31 97 11 24.3 2 17 Tue Mar 31/Wed Apr 01 1131.9 12 17 14 18 45 19 50 5 01 6 06 8 06 17 20 17 37 6 05 99 12 10.4 - 3 54
***** 2026 APRIL ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Wed Apr 01/Thu Apr 02 1132.9 12 21 11 18 45 19 50 5 01 6 06 8 11 17 23 18 28 6 39 100 12 56.2 - 9 51 Thu Apr 02/Fri Apr 03 1133.9 12 25 07 18 45 19 51 5 00 6 05 8 15 17 26 19 20 ..... 98 13 42.7 -15 19 Fri Apr 03/Sat Apr 04 1134.9 12 29 04 18 46 19 51 4 59 6 04 8 19 17 29 20 12 ..... 94 14 30.6 -20 04 Sat Apr 04/Sun Apr 05 1135.9 12 33 00 18 46 19 51 4 58 6 03 8 24 17 32 21 05 ..... 89 15 20.4 -23 56 Sun Apr 05/Mon Apr 06 1136.9 12 36 57 18 46 19 52 4 57 6 02 8 28 17 35 21 59 ..... 82 16 12.1 -26 44 Mon Apr 06/Tue Apr 07 1137.9 12 40 53 18 47 19 52 4 56 6 01 8 32 17 38 22 53 ..... 75 17 05.2 -28 19 Tue Apr 07/Wed Apr 08 1138.9 12 44 50 18 47 19 52 4 55 6 00 8 37 17 41 23 45 ..... 66 17 59.1 -28 37 Wed Apr 08/Thu Apr 09 1139.9 12 48 46 18 47 19 53 4 54 6 00 8 41 17 44 0 35 ..... 57 18 52.8 -27 35 Thu Apr 09/Fri Apr 10 1140.9 12 52 43 18 47 19 53 4 53 5 59 8 45 17 47 1 21 ..... 47 19 45.4 -25 18 Fri Apr 10/Sat Apr 11 1141.9 12 56 39 18 48 19 54 4 52 5 58 8 50 17 50 2 04 ..... 38 20 36.4 -21 51 Sat Apr 11/Sun Apr 12 1142.9 13 00 36 18 48 19 54 4 51 5 57 8 54 17 53 2 43 ..... 28 21 25.9 -17 23 Sun Apr 12/Mon Apr 13 1143.9 13 04 33 18 48 19 54 4 50 5 56 8 58 17 56 3 21 ..... 20 22 14.1 -12 05 Mon Apr 13/Tue Apr 14 1144.9 13 08 29 18 49 19 55 4 49 5 56 9 03 17 59 3 57 ..... 12 23 01.7 - 6 06 Tue Apr 14/Wed Apr 15 1145.9 13 12 26 18 49 19 55 4 48 5 55 9 07 18 02 4 34 ..... 6 23 49.9 0 18 Wed Apr 15/Thu Apr 16 1146.9 13 16 22 18 49 19 56 4 48 5 54 9 11 18 05 5 12 17 26 2 0 39.5 6 51 Thu Apr 16/Fri Apr 17 1147.9 13 20 19 18 49 19 56 4 47 5 53 9 16 18 08 5 53 18 26 0 1 31.8 13 11 Fri Apr 17/Sat Apr 18 1148.9 13 24 15 18 50 19 56 4 46 5 52 9 20 18 11 6 40 19 31 1 2 27.8 18 53 Sat Apr 18/Sun Apr 19 1149.9 13 28 12 18 50 19 57 4 45 5 52 9 24 18 14 ..... 20 39 5 3 27.8 23 29 Sun Apr 19/Mon Apr 20 1150.9 13 32 08 18 50 19 57 4 44 5 51 9 29 18 17 ..... 21 48 12 4 31.5 26 31 Mon Apr 20/Tue Apr 21 1151.9 13 36 05 18 51 19 58 4 43 5 50 9 33 18 20 ..... 22 56 20 5 37.0 27 42 Tue Apr 21/Wed Apr 22 1152.9 13 40 02 18 51 19 58 4 42 5 50 9 38 18 23 ..... 23 58 31 6 41.9 26 55 Wed Apr 22/Thu Apr 23 1153.9 13 43 58 18 51 19 59 4 41 5 49 9 42 18 26 ..... 0 53 42 7 43.8 24 22 Thu Apr 23/Fri Apr 24 1154.9 13 47 55 18 52 19 59 4 41 5 48 9 47 18 29 ..... 1 40 53 8 41.4 20 23 Fri Apr 24/Sat Apr 25 1155.9 13 51 51 18 52 20 00 4 40 5 47 9 51 18 32 ..... 2 22 64 9 34.7 15 22 Sat Apr 25/Sun Apr 26 1156.9 13 55 48 18 52 20 00 4 39 5 47 9 55 18 35 ..... 2 59 74 10 24.3 9 42 Sun Apr 26/Mon Apr 27 1157.9 13 59 44 18 53 20 01 4 38 5 46 10 00 18 39 ..... 3 33 82 11 11.3 3 42 Mon Apr 27/Tue Apr 28 1158.9 14 03 41 18 53 20 01 4 37 5 45 10 04 18 42 ..... 4 06 89 11 56.8 - 2 23 Tue Apr 28/Wed Apr 29 1159.9 14 07 37 18 54 20 02 4 37 5 45 10 09 18 45 ..... 4 39 95 12 42.0 - 8 18 Wed Apr 29/Thu Apr 30 1160.9 14 11 34 18 54 20 02 4 36 5 44 10 13 18 48 17 14 5 14 98 13 27.8 -13 50 Thu Apr 30/Fri May 01 1161.9 14 15 31 18 54 20 03 4 35 5 44 10 18 18 51 18 05 5 50 100 14 15.0 -18 46
***** 2026 MAY ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Fri May 01/Sat May 02 1162.9 14 19 27 18 55 20 03 4 34 5 43 10 22 18 54 18 58 6 30 99 15 04.2 -22 54 Sat May 02/Sun May 03 1163.9 14 23 24 18 55 20 04 4 33 5 42 10 27 18 58 19 51 ..... 97 15 55.4 -26 01 Sun May 03/Mon May 04 1164.9 14 27 20 18 55 20 04 4 33 5 42 10 31 19 01 20 45 ..... 93 16 48.5 -27 59 Mon May 04/Tue May 05 1165.9 14 31 17 18 56 20 05 4 32 5 41 10 36 19 04 21 38 ..... 87 17 42.5 -28 39 Tue May 05/Wed May 06 1166.9 14 35 13 18 56 20 05 4 31 5 41 10 40 19 07 22 28 ..... 81 18 36.5 -28 00 Wed May 06/Thu May 07 1167.9 14 39 10 18 57 20 06 4 31 5 40 10 45 19 11 23 16 ..... 73 19 29.3 -26 05 Thu May 07/Fri May 08 1168.9 14 43 06 18 57 20 07 4 30 5 40 10 49 19 14 23 59 ..... 64 20 20.5 -22 59 Fri May 08/Sat May 09 1169.9 14 47 03 18 57 20 07 4 29 5 39 10 54 19 17 0 39 ..... 54 21 09.8 -18 53 Sat May 09/Sun May 10 1170.9 14 51 00 18 58 20 08 4 29 5 39 10 58 19 20 1 16 ..... 44 21 57.5 -13 56 Sun May 10/Mon May 11 1171.9 14 54 56 18 58 20 08 4 28 5 38 11 03 19 24 1 52 ..... 34 22 44.4 - 8 18 Mon May 11/Tue May 12 1172.9 14 58 53 18 59 20 09 4 28 5 38 11 07 19 27 2 28 ..... 24 23 31.3 - 2 11 Tue May 12/Wed May 13 1173.9 15 02 49 18 59 20 09 4 27 5 37 11 12 19 30 3 04 ..... 16 0 19.5 4 13 Wed May 13/Thu May 14 1174.9 15 06 46 18 59 20 10 4 26 5 37 11 16 19 34 3 43 ..... 8 1 10.2 10 34 Thu May 14/Fri May 15 1175.9 15 10 42 19 00 20 11 4 26 5 37 11 21 19 37 4 27 ..... 3 2 04.5 16 31 Fri May 15/Sat May 16 1176.9 15 14 39 19 00 20 11 4 25 5 36 11 25 19 41 5 17 18 15 0 3 03.3 21 36 Sat May 16/Sun May 17 1177.9 15 18 35 19 01 20 12 4 25 5 36 11 30 19 44 6 14 19 26 1 4 06.6 25 18 Sun May 17/Mon May 18 1178.9 15 22 32 19 01 20 12 4 24 5 35 11 34 19 48 ..... 20 37 4 5 13.1 27 12 Mon May 18/Tue May 19 1179.9 15 26 29 19 01 20 13 4 24 5 35 11 39 19 51 ..... 21 44 10 6 20.2 27 03 Tue May 19/Wed May 20 1180.9 15 30 25 19 02 20 13 4 23 5 35 11 43 19 54 ..... 22 44 18 7 24.9 24 58 Wed May 20/Thu May 21 1181.9 15 34 22 19 02 20 14 4 23 5 35 11 48 19 58 ..... 23 36 27 8 25.2 21 16 Thu May 21/Fri May 22 1182.9 15 38 18 19 03 20 14 4 23 5 34 11 52 20 02 ..... 0 20 38 9 20.5 16 24 Fri May 22/Sat May 23 1183.9 15 42 15 19 03 20 15 4 22 5 34 11 57 20 05 ..... 0 59 49 10 11.5 10 49 Sat May 23/Sun May 24 1184.9 15 46 11 19 04 20 16 4 22 5 34 12 01 20 09 ..... 1 35 59 10 59.3 4 52 Sun May 24/Mon May 25 1185.9 15 50 08 19 04 20 16 4 21 5 34 12 06 20 12 ..... 2 08 69 11 45.0 - 1 10 Mon May 25/Tue May 26 1186.9 15 54 04 19 04 20 17 4 21 5 33 12 10 20 16 ..... 2 41 78 12 29.9 - 7 04 Tue May 26/Wed May 27 1187.9 15 58 01 19 05 20 17 4 21 5 33 12 15 20 19 ..... 3 15 86 13 15.1 -12 38 Wed May 27/Thu May 28 1188.9 16 01 58 19 05 20 18 4 20 5 33 12 19 20 23 ..... 3 50 92 14 01.5 -17 40 Thu May 28/Fri May 29 1189.9 16 05 54 19 06 20 18 4 20 5 33 12 24 20 27 ..... 4 29 96 14 49.8 -21 58 Fri May 29/Sat May 30 1190.9 16 09 51 19 06 20 19 4 20 5 33 12 28 20 30 17 46 5 12 99 15 40.3 -25 20 Sat May 30/Sun May 31 1191.9 16 13 47 19 06 20 19 4 20 5 33 12 33 20 34 18 40 5 58 100 16 32.9 -27 35 Sun May 31/Mon Jun 01 1192.9 16 17 44 19 07 20 20 4 20 5 33 12 37 20 38 19 33 ..... 99 17 26.9 -28 35
***** 2026 JUNE ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Mon Jun 01/Tue Jun 02 1193.9 16 21 40 19 07 20 20 4 19 5 32 12 41 20 42 20 24 ..... 96 18 21.2 -28 16 Tue Jun 02/Wed Jun 03 1194.9 16 25 37 19 08 20 21 4 19 5 32 12 46 20 45 21 12 ..... 91 19 14.7 -26 39 Wed Jun 03/Thu Jun 04 1195.9 16 29 33 19 08 20 21 4 19 5 32 12 50 20 49 21 57 ..... 85 20 06.4 -23 50 Thu Jun 04/Fri Jun 05 1196.9 16 33 30 19 08 20 22 4 19 5 32 12 55 20 53 22 37 ..... 78 20 56.0 -19 59 Fri Jun 05/Sat Jun 06 1197.9 16 37 27 19 09 20 22 4 19 5 32 12 59 20 57 23 15 ..... 69 21 43.7 -15 17 Sat Jun 06/Sun Jun 07 1198.9 16 41 23 19 09 20 23 4 19 5 32 13 04 21 01 23 50 ..... 60 22 30.1 - 9 53 Sun Jun 07/Mon Jun 08 1199.9 16 45 20 19 10 20 23 4 19 5 32 13 08 21 05 0 25 ..... 49 23 16.0 - 4 01 Mon Jun 08/Tue Jun 09 1200.9 16 49 16 19 10 20 24 4 19 5 32 13 12 21 09 0 59 ..... 39 0 02.6 2 09 Tue Jun 09/Wed Jun 10 1201.9 16 53 13 19 10 20 24 4 19 5 32 13 17 21 13 1 36 ..... 29 0 51.1 8 23 Wed Jun 10/Thu Jun 11 1202.9 16 57 09 19 11 20 24 4 19 5 33 13 21 21 17 2 16 ..... 19 1 42.8 14 22 Thu Jun 11/Fri Jun 12 1203.9 17 01 06 19 11 20 25 4 19 5 33 13 25 21 21 3 02 ..... 11 2 38.8 19 42 Fri Jun 12/Sat Jun 13 1204.9 17 05 02 19 11 20 25 4 19 5 33 13 30 21 25 3 55 ..... 5 3 39.8 23 56 Sat Jun 13/Sun Jun 14 1205.9 17 08 59 19 12 20 25 4 19 5 33 13 34 21 29 4 56 18 11 1 4 45.1 26 33 Sun Jun 14/Mon Jun 15 1206.9 17 12 56 19 12 20 26 4 19 5 33 13 38 21 33 6 04 19 22 0 5 52.8 27 12 Mon Jun 15/Tue Jun 16 1207.9 17 16 52 19 12 20 26 4 19 5 33 13 42 21 37 ..... 20 27 3 6 59.7 25 48 Tue Jun 16/Wed Jun 17 1208.9 17 20 49 19 12 20 26 4 19 5 33 13 47 21 41 ..... 21 24 8 8 03.2 22 33 Wed Jun 17/Thu Jun 18 1209.9 17 24 45 19 13 20 27 4 19 5 33 13 51 21 45 ..... 22 13 15 9 01.7 17 55 Thu Jun 18/Fri Jun 19 1210.9 17 28 42 19 13 20 27 4 20 5 34 13 55 21 49 ..... 22 56 24 9 55.3 12 22 Fri Jun 19/Sat Jun 20 1211.9 17 32 38 19 13 20 27 4 20 5 34 13 59 21 53 ..... 23 33 34 10 44.9 6 22 Sat Jun 20/Sun Jun 21 1212.9 17 36 35 19 13 20 27 4 20 5 34 14 03 21 57 ..... 0 08 44 11 31.8 0 14 Sun Jun 21/Mon Jun 22 1213.9 17 40 31 19 14 20 28 4 20 5 34 14 08 22 01 ..... 0 42 55 12 17.3 - 5 46 Mon Jun 22/Tue Jun 23 1214.9 17 44 28 19 14 20 28 4 20 5 35 14 12 22 06 ..... 1 16 64 13 02.6 -11 26 Tue Jun 23/Wed Jun 24 1215.9 17 48 25 19 14 20 28 4 21 5 35 14 16 22 10 ..... 1 51 74 13 48.6 -16 35 Wed Jun 24/Thu Jun 25 1216.9 17 52 21 19 14 20 28 4 21 5 35 14 20 22 14 ..... 2 29 82 14 36.2 -21 03 Thu Jun 25/Fri Jun 26 1217.9 17 56 18 19 14 20 28 4 21 5 35 14 24 22 18 ..... 3 10 88 15 25.9 -24 38 Fri Jun 26/Sat Jun 27 1218.9 18 00 14 19 14 20 28 4 22 5 36 14 28 22 23 ..... 3 55 94 16 17.9 -27 10 Sat Jun 27/Sun Jun 28 1219.9 18 04 11 19 15 20 29 4 22 5 36 14 32 22 27 17 28 4 44 97 17 11.5 -28 29 Sun Jun 28/Mon Jun 29 1220.9 18 08 07 19 15 20 29 4 22 5 36 14 36 22 31 18 20 5 36 99 18 06.0 -28 30 Mon Jun 29/Tue Jun 30 1221.9 18 12 04 19 15 20 29 4 23 5 36 14 40 22 35 19 10 6 29 100 19 00.0 -27 11 Tue Jun 30/Wed Jul 01 1222.9 18 16 00 19 15 20 29 4 23 5 37 14 44 22 40 19 55 ..... 98 19 52.6 -24 37
***** 2026 JULY ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Wed Jul 01/Thu Jul 02 1223.9 18 19 57 19 15 20 29 4 23 5 37 14 48 22 44 20 37 ..... 94 20 43.1 -20 58 Thu Jul 02/Fri Jul 03 1224.9 18 23 54 19 15 20 29 4 24 5 37 14 52 22 48 21 16 ..... 89 21 31.4 -16 24 Fri Jul 03/Sat Jul 04 1225.9 18 27 50 19 15 20 29 4 24 5 38 14 56 22 53 21 51 ..... 82 22 18.1 -11 08 Sat Jul 04/Sun Jul 05 1226.9 18 31 47 19 15 20 29 4 25 5 38 15 00 22 57 22 25 ..... 74 23 03.8 - 5 22 Sun Jul 05/Mon Jul 06 1227.9 18 35 43 19 15 20 28 4 25 5 38 15 04 23 01 22 59 ..... 64 23 49.6 0 42 Mon Jul 06/Tue Jul 07 1228.9 18 39 40 19 15 20 28 4 25 5 39 15 07 23 06 23 34 ..... 54 0 36.6 6 49 Tue Jul 07/Wed Jul 08 1229.9 18 43 36 19 15 20 28 4 26 5 39 15 11 23 10 0 11 ..... 43 1 26.1 12 46 Wed Jul 08/Thu Jul 09 1230.9 18 47 33 19 15 20 28 4 26 5 40 15 15 23 15 0 53 ..... 32 2 19.2 18 12 Thu Jul 09/Fri Jul 10 1231.9 18 51 29 19 15 20 28 4 27 5 40 15 19 23 19 1 41 ..... 22 3 17.0 22 44 Fri Jul 10/Sat Jul 11 1232.9 18 55 26 19 15 20 28 4 27 5 40 15 22 23 24 2 37 ..... 13 4 19.4 25 54 Sat Jul 11/Sun Jul 12 1233.9 18 59 23 19 15 20 27 4 28 5 41 15 26 23 28 3 41 ..... 6 5 25.4 27 17 Sun Jul 12/Mon Jul 13 1234.9 19 03 19 19 14 20 27 4 28 5 41 15 30 23 32 4 50 18 06 2 6 32.4 26 39 Mon Jul 13/Tue Jul 14 1235.9 19 07 16 19 14 20 27 4 29 5 41 15 34 23 37 6 00 19 07 0 7 37.5 24 04 Tue Jul 14/Wed Jul 15 1236.9 19 11 12 19 14 20 27 4 29 5 42 15 37 23 41 ..... 20 01 1 8 38.5 19 52 Wed Jul 15/Thu Jul 16 1237.9 19 15 09 19 14 20 26 4 30 5 42 15 41 23 46 ..... 20 47 6 9 34.8 14 31 Thu Jul 16/Fri Jul 17 1238.9 19 19 05 19 14 20 26 4 30 5 43 15 44 23 50 ..... 21 28 12 10 26.8 8 30 Fri Jul 17/Sat Jul 18 1239.9 19 23 02 19 13 20 26 4 31 5 43 15 48 23 55 ..... 22 05 20 11 15.6 2 14 Sat Jul 18/Sun Jul 19 1240.9 19 26 58 19 13 20 25 4 31 5 43 15 52 23 59 ..... 22 40 29 12 02.3 - 3 58 Sun Jul 19/Mon Jul 20 1241.9 19 30 55 19 13 20 25 4 32 5 44 15 55 0 04 ..... 23 14 39 12 48.3 - 9 52 Mon Jul 20/Tue Jul 21 1242.9 19 34 52 19 13 20 24 4 32 5 44 15 59 0 08 ..... 23 50 49 13 34.5 -15 14 Tue Jul 21/Wed Jul 22 1243.9 19 38 48 19 12 20 24 4 33 5 45 16 02 0 13 ..... 0 27 59 14 21.9 -19 56 Wed Jul 22/Thu Jul 23 1244.9 19 42 45 19 12 20 23 4 34 5 45 16 06 0 17 ..... 1 07 68 15 11.1 -23 47 Thu Jul 23/Fri Jul 24 1245.9 19 46 41 19 12 20 23 4 34 5 45 16 09 0 21 ..... 1 51 77 16 02.3 -26 37 Fri Jul 24/Sat Jul 25 1246.9 19 50 38 19 11 20 23 4 35 5 46 16 13 0 26 ..... 2 39 84 16 55.4 -28 16 Sat Jul 25/Sun Jul 26 1247.9 19 54 34 19 11 20 22 4 35 5 46 16 16 0 30 ..... 3 30 90 17 49.6 -28 38 Sun Jul 26/Mon Jul 27 1248.9 19 58 31 19 11 20 21 4 36 5 46 16 19 0 35 ..... 4 23 95 18 43.9 -27 41 Mon Jul 27/Tue Jul 28 1249.9 20 02 27 19 10 20 21 4 36 5 47 16 23 0 39 17 53 5 18 99 19 37.2 -25 26 Tue Jul 28/Wed Jul 29 1250.9 20 06 24 19 10 20 20 4 37 5 47 16 26 0 44 18 36 6 12 100 20 28.6 -22 02 Wed Jul 29/Thu Jul 30 1251.9 20 10 21 19 09 20 20 4 37 5 48 16 29 0 48 19 16 ..... 99 21 18.1 -17 37 Thu Jul 30/Fri Jul 31 1252.9 20 14 17 19 09 20 19 4 38 5 48 16 33 0 53 19 53 ..... 97 22 05.7 -12 26 Fri Jul 31/Sat Aug 01 1253.9 20 18 14 19 08 20 18 4 38 5 48 16 36 0 57 20 27 ..... 92 22 52.1 - 6 41
***** 2026 AUGUST ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Sat Aug 01/Sun Aug 02 1254.9 20 22 10 19 08 20 18 4 39 5 49 16 39 1 02 21 01 ..... 86 23 38.1 - 0 36 Sun Aug 02/Mon Aug 03 1255.9 20 26 07 19 07 20 17 4 39 5 49 16 43 1 06 21 35 ..... 77 0 24.9 5 34 Mon Aug 03/Tue Aug 04 1256.9 20 30 03 19 07 20 16 4 40 5 49 16 46 1 11 22 11 ..... 68 1 13.5 11 34 Tue Aug 04/Wed Aug 05 1257.9 20 34 00 19 06 20 16 4 40 5 50 16 49 1 15 22 51 ..... 57 2 05.0 17 07 Wed Aug 05/Thu Aug 06 1258.9 20 37 56 19 06 20 15 4 41 5 50 16 52 1 20 23 35 ..... 46 3 00.4 21 50 Thu Aug 06/Fri Aug 07 1259.9 20 41 53 19 05 20 14 4 41 5 50 16 56 1 24 0 26 ..... 34 4 00.2 25 20 Fri Aug 07/Sat Aug 08 1260.9 20 45 50 19 05 20 14 4 42 5 51 16 59 1 28 1 25 ..... 24 5 03.6 27 15 Sat Aug 08/Sun Aug 09 1261.9 20 49 46 19 04 20 13 4 42 5 51 17 02 1 33 2 30 ..... 15 6 08.9 27 17 Sun Aug 09/Mon Aug 10 1262.9 20 53 43 19 03 20 12 4 43 5 51 17 05 1 37 3 38 ..... 7 7 13.6 25 25 Mon Aug 10/Tue Aug 11 1263.9 20 57 39 19 03 20 11 4 43 5 52 17 08 1 42 4 47 17 47 2 8 15.4 21 48 Tue Aug 11/Wed Aug 12 1264.9 21 01 36 19 02 20 10 4 44 5 52 17 11 1 46 5 52 18 36 0 9 13.0 16 52 Wed Aug 12/Thu Aug 13 1265.9 21 05 32 19 01 20 10 4 44 5 52 17 15 1 50 6 53 19 20 1 10 06.7 11 02 Thu Aug 13/Fri Aug 14 1266.9 21 09 29 19 01 20 09 4 45 5 53 17 18 1 55 ..... 19 59 4 10 56.9 4 45 Fri Aug 14/Sat Aug 15 1267.9 21 13 25 19 00 20 08 4 45 5 53 17 21 1 59 ..... 20 35 9 11 44.9 - 1 36 Sat Aug 15/Sun Aug 16 1268.9 21 17 22 18 59 20 07 4 46 5 53 17 24 2 04 ..... 21 11 16 12 31.8 - 7 44 Sun Aug 16/Mon Aug 17 1269.9 21 21 19 18 59 20 06 4 46 5 54 17 27 2 08 ..... 21 46 24 13 18.5 -13 24 Mon Aug 17/Tue Aug 18 1270.9 21 25 15 18 58 20 05 4 46 5 54 17 30 2 12 ..... 22 23 33 14 06.0 -18 25 Tue Aug 18/Wed Aug 19 1271.9 21 29 12 18 57 20 05 4 47 5 54 17 33 2 17 ..... 23 03 43 14 55.0 -22 36 Wed Aug 19/Thu Aug 20 1272.9 21 33 08 18 56 20 04 4 47 5 54 17 36 2 21 ..... 23 46 52 15 45.8 -25 46 Thu Aug 20/Fri Aug 21 1273.9 21 37 05 18 56 20 03 4 48 5 55 17 39 2 25 ..... 0 33 62 16 38.3 -27 48 Fri Aug 21/Sat Aug 22 1274.9 21 41 01 18 55 20 02 4 48 5 55 17 42 2 30 ..... 1 23 71 17 32.0 -28 35 Sat Aug 22/Sun Aug 23 1275.9 21 44 58 18 54 20 01 4 48 5 55 17 45 2 34 ..... 2 15 79 18 26.1 -28 03 Sun Aug 23/Mon Aug 24 1276.9 21 48 54 18 53 20 00 4 49 5 56 17 48 2 39 ..... 3 10 86 19 19.5 -26 13 Mon Aug 24/Tue Aug 25 1277.9 21 52 51 18 52 19 59 4 49 5 56 17 51 2 43 ..... 4 04 92 20 11.6 -23 10 Tue Aug 25/Wed Aug 26 1278.9 21 56 48 18 52 19 58 4 50 5 56 17 54 2 47 17 14 4 58 97 21 01.9 -19 02 Wed Aug 26/Thu Aug 27 1279.9 22 00 44 18 51 19 57 4 50 5 56 17 57 2 51 17 52 5 51 99 21 50.4 -14 02 Thu Aug 27/Fri Aug 28 1280.9 22 04 41 18 50 19 56 4 50 5 57 18 00 2 56 18 28 6 44 100 22 37.8 - 8 20 Fri Aug 28/Sat Aug 29 1281.9 22 08 37 18 49 19 55 4 51 5 57 18 03 3 00 19 02 ..... 98 23 24.7 - 2 13 Sat Aug 29/Sun Aug 30 1282.9 22 12 34 18 48 19 54 4 51 5 57 18 06 3 04 19 37 ..... 94 0 12.0 4 05 Sun Aug 30/Mon Aug 31 1283.9 22 16 30 18 47 19 53 4 51 5 57 18 09 3 09 20 13 ..... 88 1 00.9 10 17 Mon Aug 31/Tue Sep 01 1284.9 22 20 27 18 47 19 52 4 52 5 58 18 12 3 13 20 51 ..... 80 1 52.3 16 02
***** 2026 SEPTEMBER ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Tue Sep 01/Wed Sep 02 1285.9 22 24 23 18 46 19 51 4 52 5 58 18 15 3 17 21 34 ..... 70 2 47.2 21 01 Wed Sep 02/Thu Sep 03 1286.9 22 28 20 18 45 19 50 4 52 5 58 18 18 3 21 22 22 ..... 60 3 45.9 24 50 Thu Sep 03/Fri Sep 04 1287.9 22 32 17 18 44 19 49 4 53 5 58 18 21 3 26 23 17 ..... 48 4 47.9 27 08 Fri Sep 04/Sat Sep 05 1288.9 22 36 13 18 43 19 48 4 53 5 58 18 24 3 30 0 19 ..... 37 5 51.9 27 39 Sat Sep 05/Sun Sep 06 1289.9 22 40 10 18 42 19 47 4 53 5 59 18 27 3 34 1 24 ..... 26 6 55.5 26 19 Sun Sep 06/Mon Sep 07 1290.9 22 44 06 18 41 19 46 4 54 5 59 18 30 3 39 2 31 ..... 17 7 56.8 23 16 Mon Sep 07/Tue Sep 08 1291.9 22 48 03 18 40 19 46 4 54 5 59 18 33 3 43 3 36 ..... 9 8 54.5 18 48 Tue Sep 08/Wed Sep 09 1292.9 22 51 59 18 39 19 45 4 54 5 59 18 36 3 47 4 38 17 13 4 9 48.5 13 20 Wed Sep 09/Thu Sep 10 1293.9 22 55 56 18 39 19 44 4 54 5 59 18 39 3 51 5 36 17 53 1 10 39.2 7 15 Thu Sep 10/Fri Sep 11 1294.9 22 59 52 18 38 19 43 4 55 6 00 18 42 3 55 6 33 18 30 0 11 27.6 0 56 Fri Sep 11/Sat Sep 12 1295.9 23 03 49 18 37 19 42 4 55 6 00 18 45 4 00 ..... 19 06 2 12 14.8 - 5 19 Sat Sep 12/Sun Sep 13 1296.9 23 07 46 18 36 19 41 4 55 6 00 18 48 4 04 ..... 19 42 6 13 01.7 -11 13 Sun Sep 13/Mon Sep 14 1297.9 23 11 42 18 35 19 40 4 56 6 00 18 51 4 08 ..... 20 19 12 13 49.3 -16 31 Mon Sep 14/Tue Sep 15 1298.9 23 15 39 18 34 19 39 4 56 6 01 18 54 4 12 ..... 20 58 19 14 38.1 -21 02 Tue Sep 15/Wed Sep 16 1299.9 23 19 35 18 33 19 38 4 56 6 01 18 57 4 17 ..... 21 40 27 15 28.6 -24 35 Wed Sep 16/Thu Sep 17 1300.9 23 23 32 18 32 19 37 4 56 6 01 18 59 4 21 ..... 22 25 36 16 20.6 -27 01 Thu Sep 17/Fri Sep 18 1301.9 23 27 28 18 31 19 36 4 57 6 01 19 02 4 25 ..... 23 14 45 17 13.9 -28 13 Fri Sep 18/Sat Sep 19 1302.9 23 31 25 18 30 19 35 4 57 6 01 19 05 4 29 ..... 0 06 54 18 07.5 -28 08 Sat Sep 19/Sun Sep 20 1303.9 23 35 21 18 29 19 34 4 57 6 02 19 08 4 33 ..... 1 00 64 19 00.7 -26 46 Sun Sep 20/Mon Sep 21 1304.9 23 39 18 18 28 19 33 4 57 6 02 19 11 4 37 ..... 1 54 73 19 52.7 -24 10 Mon Sep 21/Tue Sep 22 1305.9 23 43 15 18 28 19 32 4 58 6 02 19 14 4 42 ..... 2 48 81 20 43.2 -20 28 Tue Sep 22/Wed Sep 23 1306.9 23 47 11 18 27 19 31 4 58 6 02 19 17 4 46 ..... 3 41 88 21 32.0 -15 47 Wed Sep 23/Thu Sep 24 1307.9 23 51 08 18 26 19 30 4 58 6 02 19 20 4 50 ..... 4 34 94 22 19.8 -10 21 Thu Sep 24/Fri Sep 25 1308.9 23 55 04 18 25 19 29 4 58 6 03 19 23 4 54 17 00 5 27 98 23 07.2 - 4 19 Fri Sep 25/Sat Sep 26 1309.9 23 59 01 18 24 19 28 4 59 6 03 19 26 4 58 17 35 6 22 100 23 55.0 2 02 Sat Sep 26/Sun Sep 27 1310.9 0 02 57 18 23 19 27 4 59 6 03 19 29 5 03 18 11 7 18 99 0 44.3 8 25 Sun Sep 27/Mon Sep 28 1311.9 0 06 54 18 22 19 26 4 59 6 03 19 32 5 07 18 49 ..... 96 1 36.2 14 29 Mon Sep 28/Tue Sep 29 1312.9 0 10 50 18 21 19 25 4 59 6 03 19 35 5 11 19 31 ..... 91 2 31.5 19 51 Tue Sep 29/Wed Sep 30 1313.9 0 14 47 18 20 19 24 5 00 6 04 19 39 5 15 20 19 ..... 83 3 30.7 24 06 Wed Sep 30/Thu Oct 01 1314.9 0 18 44 18 19 19 24 5 00 6 04 19 42 5 19 21 13 ..... 73 4 33.2 26 50
***** 2026 OCTOBER ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Thu Oct 01/Fri Oct 02 1315.9 0 22 40 18 19 19 23 5 00 6 04 19 45 5 23 22 13 ..... 62 5 37.6 27 47 Fri Oct 02/Sat Oct 03 1316.9 0 26 37 18 18 19 22 5 00 6 04 19 48 5 28 23 17 ..... 51 6 41.6 26 51 Sat Oct 03/Sun Oct 04 1317.9 0 30 33 18 17 19 21 5 00 6 05 19 51 5 32 0 22 ..... 39 7 43.1 24 12 Sun Oct 04/Mon Oct 05 1318.9 0 34 30 18 16 19 20 5 01 6 05 19 54 5 36 1 27 ..... 29 8 40.9 20 07 Mon Oct 05/Tue Oct 06 1319.9 0 38 26 18 15 19 19 5 01 6 05 19 57 5 40 2 28 ..... 19 9 34.7 14 58 Tue Oct 06/Wed Oct 07 1320.9 0 42 23 18 14 19 18 5 01 6 05 20 00 5 44 3 26 ..... 11 10 25.2 9 10 Wed Oct 07/Thu Oct 08 1321.9 0 46 19 18 13 19 18 5 01 6 06 20 03 5 49 4 22 ..... 5 11 13.3 3 01 Thu Oct 08/Fri Oct 09 1322.9 0 50 16 18 13 19 17 5 02 6 06 20 06 5 53 5 16 17 03 2 12 00.2 - 3 10 Fri Oct 09/Sat Oct 10 1323.9 0 54 13 18 12 19 16 5 02 6 06 20 09 5 57 6 10 17 39 0 12 46.7 - 9 07 Sat Oct 10/Sun Oct 11 1324.9 0 58 09 18 11 19 15 5 02 6 07 20 13 6 01 7 04 18 15 1 13 33.7 -14 36 Sun Oct 11/Mon Oct 12 1325.9 1 02 06 18 10 19 15 5 02 6 07 20 16 6 05 ..... 18 53 3 14 22.1 -19 22 Mon Oct 12/Tue Oct 13 1326.9 1 06 02 18 09 19 14 5 03 6 07 20 19 6 10 ..... 19 34 8 15 12.1 -23 14 Tue Oct 13/Wed Oct 14 1327.9 1 09 59 18 09 19 13 5 03 6 07 20 22 6 14 ..... 20 18 14 16 03.7 -26 02 Wed Oct 14/Thu Oct 15 1328.9 1 13 55 18 08 19 12 5 03 6 08 20 25 6 18 ..... 21 06 21 16 56.5 -27 38 Thu Oct 15/Fri Oct 16 1329.9 1 17 52 18 07 19 12 5 03 6 08 20 29 6 22 ..... 21 57 29 17 49.9 -27 57 Fri Oct 16/Sat Oct 17 1330.9 1 21 48 18 06 19 11 5 04 6 08 20 32 6 26 ..... 22 50 37 18 42.7 -27 00 Sat Oct 17/Sun Oct 18 1331.9 1 25 45 18 06 19 10 5 04 6 09 20 35 6 31 ..... 23 43 47 19 34.4 -24 51 Sun Oct 18/Mon Oct 19 1332.9 1 29 42 18 05 19 10 5 04 6 09 20 38 6 35 ..... 0 37 56 20 24.5 -21 35 Mon Oct 19/Tue Oct 20 1333.9 1 33 38 18 04 19 09 5 05 6 09 20 42 6 39 ..... 1 29 66 21 12.9 -17 22 Tue Oct 20/Wed Oct 21 1334.9 1 37 35 18 04 19 08 5 05 6 10 20 45 6 43 ..... 2 22 75 22 00.2 -12 19 Wed Oct 21/Thu Oct 22 1335.9 1 41 31 18 03 19 08 5 05 6 10 20 48 6 48 ..... 3 14 83 22 47.0 - 6 36 Thu Oct 22/Fri Oct 23 1336.9 1 45 28 18 02 19 07 5 06 6 10 20 52 6 52 ..... 4 08 90 23 34.2 - 0 26 Fri Oct 23/Sat Oct 24 1337.9 1 49 24 18 02 19 07 5 06 6 11 20 55 6 56 ..... 5 04 96 0 22.9 5 56 Sat Oct 24/Sun Oct 25 1338.9 1 53 21 18 01 19 06 5 06 6 11 20 58 7 00 16 43 6 03 99 1 14.3 12 13 Sun Oct 25/Mon Oct 26 1339.9 1 57 17 18 00 19 05 5 06 6 12 21 02 7 05 17 25 7 06 100 2 09.4 18 00 Mon Oct 26/Tue Oct 27 1340.9 2 01 14 18 00 19 05 5 07 6 12 21 05 7 09 18 11 ..... 98 3 08.9 22 49 Tue Oct 27/Wed Oct 28 1341.9 2 05 11 17 59 19 04 5 07 6 12 21 09 7 13 19 04 ..... 93 4 12.6 26 10 Wed Oct 28/Thu Oct 29 1342.9 2 09 07 17 59 19 04 5 07 6 13 21 12 7 17 20 04 ..... 85 5 18.9 27 42 Thu Oct 29/Fri Oct 30 1343.9 2 13 04 17 58 19 03 5 08 6 13 21 16 7 22 21 09 ..... 76 6 25.3 27 14 Fri Oct 30/Sat Oct 31 1344.9 2 17 00 17 58 19 03 5 08 6 14 21 19 7 26 22 15 ..... 65 7 29.0 24 55 Sat Oct 31/Sun Nov 01 1345.9 2 20 57 17 57 19 03 5 09 6 14 21 23 7 30 23 21 ..... 54 8 28.5 21 04
***** 2026 NOVEMBER ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Sun Nov 01/Mon Nov 02 1346.9 2 24 53 17 57 19 02 5 09 6 15 21 26 7 35 0 23 ..... 43 9 23.5 16 06 Mon Nov 02/Tue Nov 03 1347.9 2 28 50 17 56 19 02 5 09 6 15 21 30 7 39 1 21 ..... 32 10 14.5 10 27 Tue Nov 03/Wed Nov 04 1348.9 2 32 46 17 56 19 01 5 10 6 16 21 33 7 43 2 17 ..... 23 11 02.6 4 26 Wed Nov 04/Thu Nov 05 1349.9 2 36 43 17 55 19 01 5 10 6 16 21 37 7 48 3 10 ..... 15 11 49.0 - 1 39 Thu Nov 05/Fri Nov 06 1350.9 2 40 40 17 55 19 01 5 10 6 17 21 41 7 52 4 03 ..... 8 12 34.9 - 7 34 Fri Nov 06/Sat Nov 07 1351.9 2 44 36 17 54 19 00 5 11 6 17 21 44 7 56 4 56 ..... 4 13 21.2 -13 04 Sat Nov 07/Sun Nov 08 1352.9 2 48 33 17 54 19 00 5 11 6 18 21 48 8 01 5 50 16 50 1 14 08.7 -17 57 Sun Nov 08/Mon Nov 09 1353.9 2 52 29 17 54 19 00 5 12 6 18 21 51 8 05 6 45 17 30 0 14 57.9 -22 01 Mon Nov 09/Tue Nov 10 1354.9 2 56 26 17 53 19 00 5 12 6 19 21 55 8 09 7 40 18 13 1 15 48.8 -25 05 Tue Nov 10/Wed Nov 11 1355.9 3 00 22 17 53 18 59 5 13 6 19 21 59 8 14 ..... 19 00 4 16 41.3 -27 00 Wed Nov 11/Thu Nov 12 1356.9 3 04 19 17 53 18 59 5 13 6 20 22 03 8 18 ..... 19 50 9 17 34.3 -27 39 Thu Nov 12/Fri Nov 13 1357.9 3 08 15 17 52 18 59 5 13 6 20 22 06 8 23 ..... 20 42 15 18 27.1 -27 03 Fri Nov 13/Sat Nov 14 1358.9 3 12 12 17 52 18 59 5 14 6 21 22 10 8 27 ..... 21 35 22 19 18.6 -25 15 Sat Nov 14/Sun Nov 15 1359.9 3 16 09 17 52 18 59 5 14 6 21 22 14 8 31 ..... 22 28 30 20 08.4 -22 21 Sun Nov 15/Mon Nov 16 1360.9 3 20 05 17 52 18 59 5 15 6 22 22 18 8 36 ..... 23 20 39 20 56.3 -18 30 Mon Nov 16/Tue Nov 17 1361.9 3 24 02 17 51 18 58 5 15 6 22 22 22 8 40 ..... 0 11 48 21 42.7 -13 50 Tue Nov 17/Wed Nov 18 1362.9 3 27 58 17 51 18 58 5 16 6 23 22 25 8 45 ..... 1 02 58 22 28.3 - 8 32 Wed Nov 18/Thu Nov 19 1363.9 3 31 55 17 51 18 58 5 16 6 24 22 29 8 49 ..... 1 54 68 23 13.9 - 2 43 Thu Nov 19/Fri Nov 20 1364.9 3 35 51 17 51 18 58 5 17 6 24 22 33 8 54 ..... 2 47 77 0 00.6 3 25 Fri Nov 20/Sat Nov 21 1365.9 3 39 48 17 51 18 58 5 17 6 25 22 37 8 58 ..... 3 44 86 0 49.8 9 37 Sat Nov 21/Sun Nov 22 1366.9 3 43 44 17 51 18 58 5 18 6 25 22 41 9 02 ..... 4 45 93 1 42.7 15 35 Sun Nov 22/Mon Nov 23 1367.9 3 47 41 17 51 18 58 5 18 6 26 22 45 9 07 ..... 5 50 98 2 40.4 20 52 Mon Nov 23/Tue Nov 24 1368.9 3 51 38 17 51 18 58 5 19 6 27 22 49 9 11 16 48 6 59 100 3 43.4 24 57 Tue Nov 24/Wed Nov 25 1369.9 3 55 34 17 51 18 58 5 19 6 27 22 53 9 16 17 46 ..... 99 4 50.6 27 19 Wed Nov 25/Thu Nov 26 1370.9 3 59 31 17 51 18 58 5 20 6 28 22 57 9 20 18 52 ..... 95 5 59.7 27 37 Thu Nov 26/Fri Nov 27 1371.9 4 03 27 17 51 18 59 5 20 6 28 23 01 9 25 20 00 ..... 88 7 07.3 25 49 Fri Nov 27/Sat Nov 28 1372.9 4 07 24 17 51 18 59 5 21 6 29 23 05 9 29 21 09 ..... 79 8 10.8 22 15 Sat Nov 28/Sun Nov 29 1373.9 4 11 20 17 51 18 59 5 22 6 30 23 09 9 34 22 15 ..... 69 9 09.0 17 22 Sun Nov 29/Mon Nov 30 1374.9 4 15 17 17 51 18 59 5 22 6 30 23 13 9 38 23 16 ..... 58 10 02.4 11 41 Mon Nov 30/Tue Dec 01 1375.9 4 19 13 17 51 18 59 5 23 6 31 23 18 9 43 0 13 ..... 47 10 52.0 5 37
***** 2026 DECEMBER ***** Calendar for Mauna Kea, Hawaii, west longitude (h.m.s) = 10 21 53, latitude (d.m) = 19 49.6 Note that each line lists events of one night, spanning two calendar dates. Rise/set times are given in Hawaiian time ( 10 hr W), for 4215 m above surroundings, in standard time all year. Moon coords. and illum. are for local midnight, even if moon is down. Program: John Thorstensen, Dartmouth College. Date (eve/morn) JDmid LMSTmidn ---------- Sun: --------- LST twilight: ------------- Moon: -------------- (2026 at start) (-2460000) set twi.end twi.beg rise eve morn rise set %illum RA Dec Tue Dec 01/Wed Dec 02 1376.9 4 23 10 17 51 18 59 5 23 6 31 23 22 9 47 1 07 ..... 37 11 39.2 - 0 31 Wed Dec 02/Thu Dec 03 1377.9 4 27 07 17 51 19 00 5 24 6 32 23 26 9 52 2 00 ..... 27 12 25.2 - 6 27 Thu Dec 03/Fri Dec 04 1378.9 4 31 03 17 52 19 00 5 24 6 33 23 30 9 56 2 52 ..... 19 13 11.1 -12 00 Fri Dec 04/Sat Dec 05 1379.9 4 35 00 17 52 19 00 5 25 6 33 23 34 10 01 3 45 ..... 12 13 58.0 -16 58 Sat Dec 05/Sun Dec 06 1380.9 4 38 56 17 52 19 00 5 25 6 34 23 39 10 05 4 39 ..... 6 14 46.4 -21 09 Sun Dec 06/Mon Dec 07 1381.9 4 42 53 17 52 19 01 5 26 6 35 23 43 10 10 5 33 16 10 3 15 36.6 -24 24 Mon Dec 07/Tue Dec 08 1382.9 4 46 49 17 52 19 01 5 27 6 35 23 47 10 14 6 27 16 56 1 16 28.4 -26 32 Tue Dec 08/Wed Dec 09 1383.9 4 50 46 17 53 19 01 5 27 6 36 23 51 10 19 7 20 17 45 0 17 21.2 -27 27 Wed Dec 09/Thu Dec 10 1384.9 4 54 42 17 53 19 02 5 28 6 36 23 56 10 23 ..... 18 36 2 18 13.9 -27 07 Thu Dec 10/Fri Dec 11 1385.9 4 58 39 17 53 19 02 5 28 6 37 24 00 10 28 ..... 19 29 5 19 05.6 -25 35 Fri Dec 11/Sat Dec 12 1386.9 5 02 36 17 54 19 02 5 29 6 37 0 04 10 32 ..... 20 22 10 19 55.5 -22 56 Sat Dec 12/Sun Dec 13 1387.9 5 06 32 17 54 19 03 5 29 6 38 0 09 10 37 ..... 21 14 16 20 43.4 -19 19 Sun Dec 13/Mon Dec 14 1388.9 5 10 29 17 54 19 03 5 30 6 39 0 13 10 41 ..... 22 05 23 21 29.4 -14 55 Mon Dec 14/Tue Dec 15 1389.9 5 14 25 17 55 19 04 5 30 6 39 0 17 10 46 ..... 22 55 32 22 14.0 - 9 54 Tue Dec 15/Wed Dec 16 1390.9 5 18 22 17 55 19 04 5 31 6 40 0 22 10 50 ..... 23 45 41 22 58.2 - 4 23 Wed Dec 16/Thu Dec 17 1391.9 5 22 18 17 56 19 04 5 31 6 40 0 26 10 55 ..... 0 36 51 23 42.8 1 26 Thu Dec 17/Fri Dec 18 1392.9 5 26 15 17 56 19 05 5 32 6 41 0 30 10 59 ..... 1 29 61 0 29.2 7 24 Fri Dec 18/Sat Dec 19 1393.9 5 30 11 17 56 19 05 5 32 6 41 0 35 11 04 ..... 2 26 72 1 18.6 13 16 Sat Dec 19/Sun Dec 20 1394.9 5 34 08 17 57 19 06 5 33 6 42 0 39 11 08 ..... 3 27 81 2 12.4 18 42 Sun Dec 20/Mon Dec 21 1395.9 5 38 05 17 57 19 06 5 33 6 42 0 44 11 12 ..... 4 33 89 3 11.6 23 16 Mon Dec 21/Tue Dec 22 1396.9 5 42 01 17 58 19 07 5 34 6 43 0 48 11 17 ..... 5 42 96 4 16.3 26 27 Tue Dec 22/Wed Dec 23 1397.9 5 45 58 17 58 19 07 5 34 6 43 0 53 11 21 16 27 6 51 99 5 25.2 27 45 Wed Dec 23/Thu Dec 24 1398.9 5 49 54 17 59 19 08 5 35 6 44 0 57 11 26 17 35 ..... 100 6 35.2 26 53 Thu Dec 24/Fri Dec 25 1399.9 5 53 51 17 59 19 08 5 35 6 44 1 01 11 30 18 47 ..... 97 7 42.8 23 57 Fri Dec 25/Sat Dec 26 1400.9 5 57 47 18 00 19 09 5 36 6 45 1 06 11 35 19 56 ..... 91 8 45.6 19 21 Sat Dec 26/Sun Dec 27 1401.9 6 01 44 18 01 19 09 5 36 6 45 1 10 11 39 21 02 ..... 84 9 43.2 13 39 Sun Dec 27/Mon Dec 28 1402.9 6 05 40 18 01 19 10 5 37 6 46 1 15 11 43 22 03 ..... 74 10 36.1 7 23 Mon Dec 28/Tue Dec 29 1403.9 6 09 37 18 02 19 11 5 37 6 46 1 19 11 48 23 00 ..... 64 11 25.7 1 00 Tue Dec 29/Wed Dec 30 1404.9 6 13 34 18 02 19 11 5 38 6 46 1 24 11 52 23 55 ..... 53 12 13.3 - 5 12 Wed Dec 30/Thu Dec 31 1405.9 6 17 30 18 03 19 12 5 38 6 47 1 28 11 56 0 48 ..... 43 13 00.2 -10 59 Thu Dec 31/Fri Jan 01 1406.9 6 21 27 18 03 19 12 5 38 6 47 1 33 12 01 1 41 ..... 33 13 47.5 -16 08