KECK OBSERVATORY CALENDAR FOR 2024 -ASTRONOMICAL (computed for altitude 4160.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) Zenith 2024 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 18 18 h h % h m d m deg THU AUG 01 19 09 19 50 20 18 04 06 17 31 04 39 05 07 05 47 16 41 20 24 01 04 8.4 7.8 93 0716 2643 >90 FRI AUG 02 19 09 19 49 20 17 05 05 18 21 04 39 05 07 05 48 16 44 20 28 01 08 8.4 8.4 100 0811 2415 >90 SAT AUG 03 19 08 19 48 20 17 06 01 19 05 04 40 05 08 05 48 16 48 20 32 01 13 8.4 8.4 100 0902 2039 >90 SUN AUG 04 19 07 19 48 20 16 06 54 19 44 04 40 05 08 05 48 16 51 20 36 01 17 8.4 8.4 100 0950 1613 >90 MON AUG 05 19 07 19 47 20 15 20 18 04 41 05 09 05 49 16 54 20 40 01 22 8.4 8.4 99 1035 1111 >90 TUE AUG 06 19 06 19 46 20 14 20 50 04 41 05 09 05 49 16 57 20 44 01 26 8.4 7.8 92 1118 0547 >90 WED AUG 07 19 06 19 46 20 14 21 21 04 42 05 09 05 50 17 01 20 48 01 30 8.5 7.3 86 1159 0012 >90 THU AUG 08 19 05 19 45 20 13 21 51 04 42 05 10 05 50 17 04 20 52 01 34 8.5 6.8 80 1241-0523 >90 FRI AUG 09 19 05 19 44 20 12 22 22 04 43 05 10 05 50 17 07 20 56 01 39 8.5 6.3 74 1323-1049 >90 SAT AUG 10 19 04 19 44 20 11 22 56 04 43 05 11 05 51 17 10 21 00 01 43 8.5 5.8 67 1406-1557 >90 SUN AUG 11 19 03 19 43 20 11 23 32 04 44 05 11 05 51 17 14 21 03 01 48 8.6 5.2 60 1453-2035 >90 MON AUG 12 19 03 19 42 20 10 00 14 04 44 05 12 05 51 17 17 21 07 01 52 8.6 4.5 52 1546-2415 90 TUE AUG 13 19 02 19 41 20 09 01 01 04 44 05 12 05 51 17 20 21 11 01 56 8.6 3.7 43 1639-2720 81 WED AUG 14 19 01 19 41 20 08 14 36 01 55 04 45 05 12 05 52 17 23 21 15 02 01 8.6 2.8 32 1737-2858 72 THU AUG 15 19 01 19 40 20 07 15 36 02 55 04 45 05 13 05 52 17 26 21 19 02 05 8.6 1.8 21 1839-2854 62 FRI AUG 16 19 00 19 39 20 06 16 34 04 00 04 46 05 13 05 52 17 29 21 23 02 10 8.7 0.8 8 1941-2703 53 SAT AUG 17 18 59 19 38 20 06 17 28 05 05 04 46 05 13 05 53 17 32 21 27 02 14 8.7 0.0 0 2043-2325 45 SUN AUG 18 18 58 19 37 20 05 18 17 06 11 04 47 05 14 05 53 17 35 21 31 02 19 8.7 0.0 0 2143-1815 38 MON AUG 19 18 58 19 37 20 04 19 02 04 47 05 14 05 53 17 38 21 35 02 23 8.7 0.0 0 2240-1155 35 TUE AUG 20 18 57 19 36 20 03 19 43 04 48 05 15 05 54 17 41 21 39 02 28 8.8 0.0 0 2334-0454 38 WED AUG 21 18 56 19 35 20 02 20 23 04 48 05 15 05 54 17 44 21 43 02 32 8.8 0.4 3 0027 0221 44 THU AUG 22 18 55 19 34 20 01 21 02 04 48 05 15 05 54 17 47 21 47 02 36 8.8 1.0 11 0120 0920 53 FRI AUG 23 18 54 19 33 20 00 21 43 04 49 05 16 05 54 17 50 21 51 02 41 8.8 1.7 19 0214 1540 63 SAT AUG 24 18 54 19 32 19 59 22 26 04 49 05 16 05 55 17 53 21 55 02 45 8.8 2.4 27 0310 2057 73 SUN AUG 25 18 53 19 32 19 58 23 14 04 49 05 16 05 55 17 56 21 59 02 48 8.8 3.3 36 0408 2453 84 MON AUG 26 18 52 19 31 19 57 00 06 04 50 05 16 05 55 17 59 22 03 02 53 8.9 4.1 46 0507 2721 >90 TUE AUG 27 18 51 19 30 19 56 01 02 14 30 04 50 05 17 05 55 18 02 22 07 02 57 8.9 5.1 57 0606 2808 >90 WED AUG 28 18 50 19 29 19 55 02 00 15 27 04 51 05 17 05 56 18 05 22 10 03 02 8.9 6.1 68 0704 2720 >90 THU AUG 29 18 50 19 28 19 54 02 59 16 18 04 51 05 17 05 56 18 08 22 14 03 06 9.0 7.1 79 0759 2507 >90 FRI AUG 30 18 49 19 27 19 53 03 55 17 04 04 51 05 18 05 56 18 11 22 18 03 10 9.0 8.0 89 0851 2145 >90 SAT AUG 31 18 48 19 26 19 53 04 49 17 44 04 52 05 18 05 56 18 15 22 22 03 15 9.0 8.9 99 0939 1729 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Aug 04 11:10 UT AND FOLLOWING MORNING. FIRST QUARTER Aug 12 15:18 UT All dates and times are zone HST FULL MOON Aug 19 18:25 UT in upper table (except sid time). LAST QUARTER Aug 26 09:26 UT