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 APR 01 18 46 19 24 19 50 03 23 14 34 05 02 05 28 06 06 08 10 12 20 17 23 9.2 7.5 82 2129-1513 >90 FRI APR 02 18 46 19 24 19 50 03 58 15 25 05 01 05 27 06 05 08 13 12 24 17 26 9.2 8.1 88 2214-1012 >90 SAT APR 03 18 47 19 24 19 51 04 31 16 15 05 00 05 26 06 04 08 18 12 28 17 29 9.1 8.7 94 2258-0443 >90 SUN APR 04 18 47 19 25 19 51 05 05 17 06 04 59 05 25 06 03 08 22 12 32 17 32 9.1 9.1 100 2342 0102 >90 MON APR 05 18 47 19 25 19 51 05 40 17 59 04 58 05 24 06 02 08 26 12 36 17 35 9.1 9.1 100 0028 0651 >90 TUE APR 06 18 47 19 25 19 52 06 18 18 53 04 57 05 23 06 01 08 31 12 40 17 38 9.1 9.1 100 0116 1230 >90 WED APR 07 18 48 19 26 19 52 06 59 19 51 04 56 05 22 06 00 08 35 12 44 17 41 9.1 9.1 100 0207 1740 >90 THU APR 08 18 48 19 26 19 52 20 53 04 55 05 21 06 00 08 39 12 48 17 44 9.0 8.0 88 0302 2200 >90 FRI APR 09 18 48 19 26 19 53 21 56 04 54 05 20 05 59 08 44 12 52 17 47 9.0 7.0 77 0400 2510 >90 SAT APR 10 18 48 19 27 19 53 23 01 04 53 05 20 05 58 08 48 12 56 17 49 9.0 5.9 65 0502 2648 >90 SUN APR 11 18 49 19 27 19 53 00 03 04 52 05 19 05 57 08 52 13 00 17 52 9.0 4.8 53 0611 2606 >90 MON APR 12 18 49 19 27 19 54 00 59 04 51 05 18 05 56 08 57 13 04 17 55 9.0 3.9 43 0708 2450 81 TUE APR 13 18 49 19 28 19 54 01 50 04 50 05 17 05 55 09 01 13 07 17 58 8.9 3.0 33 0808 2124 69 WED APR 14 18 50 19 28 19 55 02 35 04 50 05 16 05 55 09 06 13 11 18 02 8.9 2.3 25 0905 1639 58 THU APR 15 18 50 19 29 19 55 03 16 04 49 05 15 05 54 09 10 13 15 18 05 8.9 1.5 17 0958 1058 48 FRI APR 16 18 50 19 29 19 56 14 55 03 55 04 48 05 14 05 53 09 15 13 19 18 08 8.9 0.9 9 1050 0442 39 SAT APR 17 18 51 19 29 19 56 15 52 04 32 04 47 05 14 05 52 09 19 13 23 18 11 8.9 0.2 2 1140-0145 33 SUN APR 18 18 51 19 30 19 56 16 48 05 09 04 46 05 13 05 51 09 23 13 27 18 14 8.8 0.0 0 1230-0806 31 MON APR 19 18 51 19 30 19 57 17 45 05 48 04 45 05 12 05 51 09 27 13 31 18 17 8.8 0.0 0 1320-1358 34 TUE APR 20 18 52 19 30 19 57 18 42 06 30 04 44 05 11 05 50 09 31 13 35 18 20 8.8 0.0 0 1412-1906 40 WED APR 21 18 52 19 31 19 58 19 39 04 43 05 10 05 49 09 36 13 39 18 23 8.7 0.0 0 1506-2313 48 THU APR 22 18 52 19 31 19 58 20 37 04 42 05 09 05 49 09 40 13 43 18 26 8.7 0.6 7 1601-2606 57 FRI APR 23 18 53 19 32 19 59 21 33 04 42 05 09 05 48 09 45 13 47 18 30 8.7 1.6 17 1657-2737 66 SAT APR 24 18 53 19 32 19 59 22 26 04 41 05 08 05 47 09 49 13 51 18 33 8.7 2.4 28 1752-2742 75 SUN APR 25 18 53 19 32 20 00 23 16 04 40 05 07 05 46 09 54 13 55 18 36 8.7 3.3 37 1846-2629 84 MON APR 26 18 54 19 33 20 00 00 01 04 39 05 06 05 46 09 58 13 59 18 39 8.7 4.0 46 1938-2412 >90 TUE APR 27 18 54 19 33 20 01 00 42 04 38 05 06 05 45 10 03 14 03 18 41 8.6 4.7 54 2027-2051 >90 WED APR 28 18 54 19 34 20 01 01 20 04 37 05 05 05 44 10 07 14 07 18 44 8.6 5.3 61 2114-1642 >90 THU APR 29 18 55 19 34 20 02 01 55 04 37 05 04 05 44 10 12 14 11 18 48 8.6 5.9 68 2159-1153 >90 FRI APR 30 18 55 19 35 20 02 02 28 14 06 04 36 05 03 05 43 10 16 14 15 18 51 8.6 6.4 75 2243-0636 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Apr 06 23:51 UT AND FOLLOWING MORNING. FIRST QUARTER Apr 13 22:56 UT All dates and times are zone HST FULL MOON Apr 20 22:29 UT in upper table (except sid time). LAST QUARTER Apr 28 20:17 UT