KECK OBSERVATORY CALENDAR FOR 2028 -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 2028 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 SAT APR 01 18 46 19 24 19 50 01 05 05 01 05 27 06 05 08 12 12 23 17 25 9.2 3.9 42 0633 2441 80 SUN APR 02 18 47 19 24 19 51 01 56 05 00 05 26 06 04 08 17 12 27 17 28 9.1 3.1 33 0732 2202 68 MON APR 03 18 47 19 25 19 51 02 44 04 59 05 25 06 03 08 21 12 31 17 31 9.1 2.3 24 0830 1758 57 TUE APR 04 18 47 19 25 19 51 14 00 03 28 04 58 05 24 06 02 08 25 12 35 17 34 9.1 1.5 16 0926 1243 46 WED APR 05 18 47 19 25 19 52 15 03 04 11 04 57 05 23 06 01 08 30 12 39 17 37 9.1 0.8 8 1021 0636 36 THU APR 06 18 48 19 26 19 52 16 05 04 52 04 56 05 22 06 00 08 34 12 43 17 40 9.1 0.1 0 1116 0001 29 FRI APR 07 18 48 19 26 19 52 17 06 05 33 04 55 05 21 06 00 08 38 12 47 17 43 9.0 0.0 0 1210-0637 28 SAT APR 08 18 48 19 26 19 53 18 08 06 17 04 54 05 20 05 59 08 43 12 51 17 46 9.0 0.0 0 1306-1251 33 SUN APR 09 18 48 19 27 19 53 19 11 04 53 05 20 05 58 08 47 12 55 17 49 9.0 0.0 0 1403-1816 42 MON APR 10 18 49 19 27 19 53 20 14 04 52 05 19 05 57 08 51 12 59 17 51 9.0 0.4 3 1502-2231 52 TUE APR 11 18 49 19 27 19 54 21 17 04 51 05 18 05 56 08 56 13 03 17 54 9.0 1.4 15 1601-2519 63 WED APR 12 18 49 19 28 19 54 22 17 04 50 05 17 05 55 09 00 13 07 17 57 8.9 2.4 26 1701-2634 73 THU APR 13 18 50 19 28 19 55 23 13 04 50 05 16 05 55 09 05 13 10 18 01 8.9 3.3 37 1759-2613 84 FRI APR 14 18 50 19 29 19 55 00 03 04 49 05 15 05 54 09 09 13 14 18 04 8.9 4.1 46 1855-2439 >90 SAT APR 15 18 50 19 29 19 56 00 48 04 48 05 14 05 53 09 14 13 18 18 07 8.9 4.9 54 1947-2156 >90 SUN APR 16 18 51 19 29 19 56 01 29 04 47 05 14 05 52 09 18 13 22 18 10 8.9 5.6 62 2036-1820 >90 MON APR 17 18 51 19 30 19 56 02 06 04 46 05 13 05 51 09 22 13 26 18 13 8.8 6.2 69 2122-1406 >90 TUE APR 18 18 51 19 30 19 57 02 39 14 09 04 45 05 12 05 51 09 27 13 30 18 16 8.8 6.7 76 2206-0923 >90 WED APR 19 18 52 19 30 19 57 03 12 14 58 04 44 05 11 05 50 09 30 13 34 18 19 8.8 7.2 82 2248-0422 >90 THU APR 20 18 52 19 31 19 58 03 44 15 46 04 43 05 10 05 49 09 35 13 38 18 22 8.7 7.8 88 2331 0048 >90 FRI APR 21 18 52 19 31 19 58 04 17 16 34 04 42 05 09 05 49 09 39 13 42 18 25 8.7 8.3 95 0013 0558 >90 SAT APR 22 18 53 19 32 19 59 04 51 17 24 04 42 05 09 05 48 09 44 13 46 18 29 8.7 8.7 100 0058 1057 >90 SUN APR 23 18 53 19 32 19 59 05 29 18 16 04 41 05 08 05 47 09 48 13 50 18 32 8.7 8.7 100 0144 1535 >90 MON APR 24 18 53 19 32 20 00 06 10 19 10 04 40 05 07 05 46 09 53 13 54 18 35 8.7 8.7 100 0234 1936 >90 TUE APR 25 18 54 19 33 20 00 06 57 20 07 04 39 05 06 05 46 09 57 13 58 18 38 8.7 8.5 98 0327 2246 >90 WED APR 26 18 54 19 33 20 01 21 06 04 38 05 06 05 45 10 02 14 02 18 40 8.6 7.5 87 0423 2448 >90 THU APR 27 18 54 19 34 20 01 22 04 04 37 05 05 05 44 10 06 14 06 18 43 8.6 6.5 76 0521 2529 >90 FRI APR 28 18 55 19 34 20 02 23 01 04 37 05 04 05 44 10 11 14 10 18 47 8.6 5.6 65 0620 2440 >90 SAT APR 29 18 55 19 35 20 02 23 53 04 36 05 03 05 43 10 15 14 14 18 50 8.6 4.7 55 0718 2222 >90 SUN APR 30 18 55 19 35 20 03 00 41 04 35 05 03 05 42 10 20 14 18 18 53 8.5 3.9 45 0816 1839 84 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Apr 02 19:16 UT AND FOLLOWING MORNING. FULL MOON Apr 09 10:27 UT All dates and times are zone HST LAST QUARTER Apr 16 16:38 UT in upper table (except sid time). NEW MOON Apr 24 19:49 UT