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 SUN AUG 01 19 10 19 50 20 19 06 08 18 54 04 38 05 06 05 47 16 40 20 21 01 00 8.3 8.3 100 0849 1722 >90 MON AUG 02 19 09 19 50 20 18 19 41 04 39 05 07 05 47 16 43 20 25 01 05 8.4 8.4 100 0946 1133 >90 TUE AUG 03 19 09 19 49 20 17 20 24 04 39 05 07 05 48 16 45 20 29 01 09 8.4 8.3 98 1040 0506 >90 WED AUG 04 19 08 19 48 20 17 21 04 04 40 05 08 05 48 16 49 20 33 01 14 8.4 7.6 90 1132-0130 >90 THU AUG 05 19 07 19 48 20 16 21 43 04 40 05 08 05 48 16 52 20 37 01 18 8.4 6.9 82 1223-0754 >90 FRI AUG 06 19 07 19 47 20 15 22 22 04 41 05 09 05 49 16 55 20 41 01 23 8.4 6.3 74 1313-1345 >90 SAT AUG 07 19 06 19 46 20 14 23 03 04 41 05 09 05 49 16 58 20 45 01 27 8.4 5.6 66 1404-1848 >90 SUN AUG 08 19 06 19 46 20 14 23 47 04 42 05 09 05 50 17 02 20 49 01 32 8.5 4.9 58 1457-2251 >90 MON AUG 09 19 05 19 45 20 13 00 33 04 42 05 10 05 50 17 05 20 53 01 35 8.5 4.1 48 1551-2540 86 TUE AUG 10 19 05 19 44 20 12 14 01 01 23 04 43 05 10 05 50 17 08 20 57 01 40 8.5 3.3 39 1645-2721 77 WED AUG 11 19 04 19 44 20 11 14 55 02 15 04 43 05 11 05 51 17 11 21 01 01 44 8.5 2.5 28 1740-2743 68 THU AUG 12 19 03 19 43 20 11 15 45 03 08 04 44 05 11 05 51 17 15 21 05 01 49 8.6 1.6 18 1834-2643 59 FRI AUG 13 19 03 19 42 20 10 16 32 04 01 04 44 05 12 05 51 17 18 21 08 01 53 8.6 0.7 8 1926-2431 51 SAT AUG 14 19 02 19 41 20 09 17 14 04 54 04 44 05 12 05 51 17 21 21 12 01 57 8.6 0.0 0 2016-2116 43 SUN AUG 15 19 01 19 41 20 08 17 53 05 45 04 45 05 12 05 52 17 24 21 16 02 02 8.6 0.0 0 2104-1708 37 MON AUG 16 19 01 19 40 20 07 18 28 06 34 04 45 05 13 05 52 17 27 21 20 02 06 8.6 0.0 0 2149-1221 33 TUE AUG 17 19 00 19 39 20 06 19 01 04 46 05 13 05 52 17 30 21 24 02 11 8.7 0.0 0 2234-0706 32 WED AUG 18 18 59 19 38 20 06 19 34 04 46 05 13 05 53 17 34 21 28 02 15 8.7 0.0 0 2317-0134 34 THU AUG 19 18 58 19 37 20 05 20 06 04 47 05 14 05 53 17 37 21 32 02 20 8.7 0.0 0 2401 0403 40 FRI AUG 20 18 58 19 37 20 04 20 39 04 47 05 14 05 53 17 39 21 36 02 24 8.7 0.6 6 0047 0934 47 SAT AUG 21 18 57 19 36 20 03 21 14 04 48 05 15 05 54 17 42 21 40 02 29 8.8 1.2 13 0134 1446 56 SUN AUG 22 18 56 19 35 20 02 21 53 04 48 05 15 05 54 17 45 21 44 02 33 8.8 1.9 21 0224 1923 65 MON AUG 23 18 55 19 34 20 01 22 37 04 48 05 15 05 54 17 48 21 48 02 37 8.8 2.6 29 0318 2307 76 TUE AUG 24 18 54 19 33 20 00 23 28 04 49 05 16 05 54 17 51 21 52 02 42 8.8 3.5 39 0416 2536 87 WED AUG 25 18 54 19 32 19 59 00 26 04 49 05 16 05 55 17 54 21 56 02 46 8.8 4.4 50 0518 2644 >90 THU AUG 26 18 53 19 32 19 58 01 29 14 48 04 49 05 16 05 55 17 57 22 00 02 50 8.8 5.5 62 0621 2604 >90 FRI AUG 27 18 52 19 31 19 57 02 37 15 46 04 50 05 16 05 55 18 00 22 04 02 54 8.9 6.7 75 0724 2338 >90 SAT AUG 28 18 51 19 30 19 56 03 45 16 40 04 50 05 17 05 55 18 03 22 08 02 58 8.9 7.8 87 0825 1935 >90 SUN AUG 29 18 50 19 29 19 55 04 51 17 29 04 51 05 17 05 56 18 06 22 12 03 03 8.9 8.9 100 0923 1415 >90 MON AUG 30 18 50 19 28 19 54 05 55 18 14 04 51 05 17 05 56 18 09 22 16 03 07 9.0 9.0 100 1018 0802 >90 TUE AUG 31 18 49 19 27 19 53 06 57 18 56 04 51 05 18 05 56 18 12 22 19 03 11 9.0 9.0 100 1111 0125 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Aug 02 10:05 UT AND FOLLOWING MORNING. FIRST QUARTER Aug 09 04:54 UT All dates and times are zone HST FULL MOON Aug 17 07:30 UT in upper table (except sid time). LAST QUARTER Aug 25 02:28 UT NEW MOON Aug 31 17:41 UT