KECK OBSERVATORY CALENDAR FOR 2022 -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 2022 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 FRI APR 01 18 46 19 24 19 50 19 32 05 02 05 28 06 06 08 10 12 21 17 24 9.2 9.2 100 0140 0735 >90 SAT APR 02 18 46 19 24 19 50 20 24 05 01 05 27 06 05 08 14 12 25 17 27 9.2 8.6 93 0226 1249 >90 SUN APR 03 18 47 19 24 19 51 21 18 05 00 05 26 06 04 08 19 12 29 17 30 9.1 7.7 84 0313 1727 >90 MON APR 04 18 47 19 25 19 51 22 11 04 59 05 25 06 03 08 23 12 33 17 33 9.1 6.8 74 0402 2117 >90 TUE APR 05 18 47 19 25 19 51 23 06 04 58 05 24 06 02 08 27 12 37 17 36 9.1 5.9 64 0452 2410 >90 WED APR 06 18 47 19 25 19 52 23 59 04 57 05 23 06 01 08 32 12 41 17 39 9.1 5.0 54 0544 2558 >90 THU APR 07 18 48 19 26 19 52 00 51 04 56 05 22 06 00 08 36 12 45 17 41 9.1 4.1 45 0637 2632 83 FRI APR 08 18 48 19 26 19 52 01 40 04 55 05 21 06 00 08 40 12 49 17 44 9.0 3.2 35 0730 2556 73 SAT APR 09 18 48 19 26 19 53 02 26 04 54 05 20 05 59 08 45 12 53 17 47 9.0 2.5 27 0823 2405 62 SUN APR 10 18 48 19 27 19 53 03 08 04 53 05 20 05 58 08 49 12 57 17 50 9.0 1.7 19 0914 2104 52 MON APR 11 18 49 19 27 19 53 14 09 03 48 04 52 05 19 05 57 08 53 13 00 17 53 9.0 1.1 11 1005 1659 42 TUE APR 12 18 49 19 27 19 54 15 04 04 26 04 51 05 18 05 56 08 58 13 04 17 56 9.0 0.4 4 1054 1200 32 WED APR 13 18 49 19 28 19 54 15 59 05 03 04 50 05 17 05 55 09 02 13 08 17 59 8.9 0.0 0 1143 0617 25 THU APR 14 18 50 19 28 19 55 16 55 05 39 04 50 05 16 05 55 09 07 13 12 18 03 8.9 0.0 0 1233 0005 22 FRI APR 15 18 50 19 29 19 55 17 52 06 18 04 49 05 15 05 54 09 11 13 16 18 06 8.9 0.0 0 1324-0618 26 SAT APR 16 18 50 19 29 19 56 18 51 06 59 04 48 05 14 05 53 09 15 13 20 18 09 8.9 0.0 0 1417-1231 35 SUN APR 17 18 51 19 29 19 56 19 53 04 47 05 14 05 52 09 19 13 24 18 12 8.9 0.0 0 1513-1808 46 MON APR 18 18 51 19 30 19 56 20 57 04 46 05 13 05 51 09 23 13 28 18 15 8.8 1.0 11 1612-2244 58 TUE APR 19 18 51 19 30 19 57 22 04 04 45 05 12 05 51 09 28 13 32 18 18 8.8 2.1 24 1715-2553 71 WED APR 20 18 52 19 30 19 57 23 10 04 44 05 11 05 50 09 32 13 36 18 21 8.8 3.2 36 1820-2712 83 THU APR 21 18 52 19 31 19 58 00 12 04 43 05 10 05 49 09 37 13 40 18 24 8.7 4.2 48 1925-2650 >90 FRI APR 22 18 52 19 31 19 58 01 08 04 42 05 09 05 49 09 41 13 44 18 27 8.7 5.2 59 2026-2442 >90 SAT APR 23 18 53 19 32 19 59 01 58 04 42 05 09 05 48 09 46 13 48 18 31 8.7 6.0 68 2124-2109 >90 SUN APR 24 18 53 19 32 19 59 02 43 04 41 05 08 05 47 09 50 13 52 18 33 8.7 6.7 77 2218-1633 >90 MON APR 25 18 53 19 32 20 00 03 22 14 43 04 40 05 07 05 46 09 55 13 56 18 36 8.7 7.4 85 2309-1116 >90 TUE APR 26 18 54 19 33 20 00 03 59 15 38 04 39 05 06 05 46 09 59 14 00 18 39 8.7 8.0 92 2356-0535 >90 WED APR 27 18 54 19 33 20 01 04 33 16 32 04 38 05 06 05 45 10 04 14 04 18 42 8.6 8.5 99 0042 0012 >90 THU APR 28 18 54 19 34 20 01 05 08 17 24 04 37 05 05 05 44 10 08 14 07 18 45 8.6 8.6 100 0128 0552 >90 FRI APR 29 18 55 19 34 20 02 05 43 18 16 04 37 05 04 05 44 10 13 14 11 18 49 8.6 8.6 100 0213 1113 >90 SAT APR 30 18 55 19 35 20 02 06 20 19 09 04 36 05 03 05 43 10 17 14 15 18 52 8.6 8.6 100 0300 1602 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Apr 01 06:25 UT AND FOLLOWING MORNING. FIRST QUARTER Apr 09 06:47 UT All dates and times are zone HST FULL MOON Apr 16 18:54 UT in upper table (except sid time). LAST QUARTER Apr 23 11:57 UT NEW MOON Apr 30 20:26 UT