KECK OBSERVATORY CALENDAR FOR 2027 -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 2027 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 JUL 01 19 16 19 58 20 29 03 57 17 14 04 23 04 53 05 35 14 47 18 19 22 43 7.9 7.5 94 0500 2621 >90 FRI JUL 02 19 16 19 59 20 29 05 04 18 20 04 23 04 53 05 36 14 51 18 23 22 47 7.9 7.9 100 0606 2609 >90 SAT JUL 03 19 16 19 59 20 29 06 14 19 23 04 24 04 54 05 36 14 55 18 27 22 52 7.9 7.9 100 0711 2401 >90 SUN JUL 04 19 16 19 59 20 29 20 18 04 24 04 54 05 36 14 59 18 31 22 56 7.9 7.9 100 0814 2010 >90 MON JUL 05 19 16 19 59 20 28 21 07 04 24 04 54 05 37 15 02 18 35 22 59 7.9 7.3 91 0913 1500 >90 TUE JUL 06 19 16 19 58 20 28 21 51 04 25 04 55 05 37 15 06 18 39 23 04 7.9 6.6 82 1008 0859 >90 WED JUL 07 19 16 19 58 20 28 22 31 04 25 04 55 05 37 15 10 18 43 23 08 7.9 5.9 74 1100 0235 >90 THU JUL 08 19 16 19 58 20 28 23 09 04 26 04 56 05 38 15 14 18 47 23 13 8.0 5.3 66 1149-0348 >90 FRI JUL 09 19 16 19 58 20 28 23 47 04 26 04 56 05 38 15 18 18 51 23 17 8.0 4.7 58 1239-0953 >90 SAT JUL 10 19 16 19 58 20 28 00 25 04 27 04 56 05 39 15 22 18 54 23 22 8.0 4.0 50 1329-1518 88 SUN JUL 11 19 16 19 58 20 28 01 06 04 27 04 57 05 39 15 26 18 58 23 26 8.0 3.3 41 1419-2004 79 MON JUL 12 19 16 19 58 20 27 14 15 01 50 04 28 04 57 05 39 15 29 19 02 23 31 8.0 2.6 32 1511-2352 71 TUE JUL 13 19 16 19 58 20 27 15 11 02 37 04 28 04 58 05 40 15 33 19 06 23 35 8.0 1.8 23 1605-2626 64 WED JUL 14 19 15 19 57 20 27 16 06 03 27 04 29 04 58 05 40 15 37 19 10 23 40 8.0 1.0 12 1700-2744 57 THU JUL 15 19 15 19 57 20 27 16 59 04 20 04 29 04 59 05 40 15 41 19 14 23 44 8.0 0.1 1 1755-2741 51 FRI JUL 16 19 15 19 57 20 26 17 48 05 13 04 30 04 59 05 41 15 44 19 18 23 49 8.1 0.0 0 1849-2620 47 SAT JUL 17 19 15 19 57 20 26 18 33 06 06 04 30 05 00 05 41 15 47 19 22 23 53 8.1 0.0 0 1941-2348 44 SUN JUL 18 19 15 19 56 20 26 19 14 06 58 04 31 05 00 05 42 15 51 19 26 23 58 8.1 0.0 0 2030-2017 43 MON JUL 19 19 14 19 56 20 25 19 52 04 31 05 00 05 42 15 54 19 30 00 02 8.1 0.0 0 2117-1558 44 TUE JUL 20 19 14 19 56 20 25 20 26 04 32 05 01 05 42 15 58 19 34 00 07 8.1 0.0 0 2202-1103 48 WED JUL 21 19 14 19 55 20 24 20 59 04 32 05 01 05 43 16 01 19 38 00 11 8.1 0.6 7 2246-0544 53 THU JUL 22 19 14 19 55 20 24 21 31 04 33 05 02 05 43 16 05 19 42 00 16 8.2 1.1 13 2329-0013 59 FRI JUL 23 19 13 19 55 20 24 22 03 04 33 05 02 05 44 16 09 19 46 00 19 8.2 1.6 20 0013 0522 66 SAT JUL 24 19 13 19 54 20 23 22 37 04 34 05 03 05 44 16 12 19 50 00 24 8.2 2.2 27 0058 1049 74 SUN JUL 25 19 13 19 54 20 23 23 14 04 34 05 03 05 44 16 16 19 54 00 28 8.2 2.9 34 0146 1553 83 MON JUL 26 19 12 19 53 20 22 23 55 04 35 05 04 05 45 16 19 19 58 00 33 8.2 3.5 43 0233 1951 >90 TUE JUL 27 19 12 19 53 20 21 00 43 04 35 05 04 05 45 16 22 20 01 00 37 8.2 4.4 53 0335 2354 >90 WED JUL 28 19 11 19 52 20 21 01 38 14 55 04 36 05 05 05 46 16 26 20 05 00 42 8.2 5.3 64 0435 2605 >90 THU JUL 29 19 11 19 52 20 20 02 41 16 00 04 37 05 05 05 46 16 29 20 09 00 47 8.3 6.3 76 0539 2635 >90 FRI JUL 30 19 10 19 51 20 20 03 49 17 03 04 37 05 06 05 46 16 33 20 13 00 51 8.3 7.5 90 0644 2515 >90 SAT JUL 31 19 10 19 51 20 19 04 59 18 02 04 38 05 06 05 47 16 36 20 17 00 56 8.3 8.3 100 0748 2205 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Jul 04 03:01 UT AND FOLLOWING MORNING. FIRST QUARTER Jul 10 18:39 UT All dates and times are zone HST FULL MOON Jul 18 15:45 UT in upper table (except sid time). LAST QUARTER Jul 26 16:55 UT