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 FRI DEC 01 17 53 18 33 19 00 17 23 05 23 05 50 06 30 23 24 04 25 09 49 10.4 0.0 0 0454 2512 08 SAT DEC 02 17 53 18 33 19 00 18 19 05 24 05 51 06 31 23 28 04 29 09 54 10.4 0.0 0 0552 2456 20 SUN DEC 03 17 53 18 33 19 00 19 18 05 24 05 51 06 32 23 32 04 33 09 58 10.4 0.3 2 0651 2314 32 MON DEC 04 17 53 18 33 19 00 20 19 05 25 05 52 06 32 23 36 04 37 10 03 10.4 1.3 12 0749 2009 45 TUE DEC 05 17 53 18 34 19 01 21 19 05 25 05 52 06 33 23 41 04 41 10 07 10.4 2.3 22 0844 1555 58 WED DEC 06 17 53 18 34 19 01 22 19 05 26 05 53 06 33 23 45 04 45 10 12 10.4 3.3 31 0937 1048 71 THU DEC 07 17 54 18 34 19 01 23 18 05 27 05 54 06 34 23 49 04 49 10 17 10.4 4.3 41 1029 0504 84 FRI DEC 08 17 54 18 34 19 01 00 16 05 27 05 54 06 35 23 53 04 53 10 21 10.4 5.3 50 1120-0051 >90 SAT DEC 09 17 54 18 35 19 02 01 14 05 28 05 55 06 35 23 58 04 57 10 26 10.4 6.2 59 1211-0647 >90 SUN DEC 10 17 55 18 35 19 02 02 14 05 28 05 55 06 36 00 02 05 01 10 30 10.4 7.2 69 1304-1222 >90 MON DEC 11 17 55 18 35 19 03 03 15 14 18 05 29 05 56 06 36 00 07 05 05 10 34 10.4 8.2 78 1359-1718 >90 TUE DEC 12 17 55 18 36 19 03 04 18 15 05 05 29 05 56 06 37 00 11 05 09 10 38 10.4 9.3 88 1456-2113 >90 WED DEC 13 17 56 18 36 19 03 05 21 15 57 05 30 05 57 06 38 00 15 05 12 10 43 10.5 10.3 98 1556-2352 >90 THU DEC 14 17 56 18 37 19 04 06 22 16 53 05 30 05 58 06 38 00 20 05 16 10 47 10.4 10.4 100 1656-2503 >90 FRI DEC 15 17 56 18 37 19 04 17 53 05 31 05 58 06 39 00 24 05 20 10 52 10.4 10.4 100 1755-2442 >90 SAT DEC 16 17 57 18 37 19 05 18 53 05 32 05 59 06 39 00 28 05 24 10 57 10.4 10.4 100 1853-2257 >90 SUN DEC 17 17 57 18 38 19 05 19 51 05 32 05 59 06 40 00 32 05 28 11 01 10.4 9.7 92 1947-2002 >90 MON DEC 18 17 58 18 38 19 05 20 47 05 33 06 00 06 40 00 36 05 32 11 06 10.5 8.8 83 2038-1614 >90 TUE DEC 19 17 58 18 39 19 06 21 40 05 33 06 00 06 41 00 41 05 36 11 10 10.4 7.9 75 2125-1149 >90 WED DEC 20 17 59 18 39 19 06 22 30 05 34 06 01 06 41 00 45 05 40 11 15 10.5 7.1 67 2210-0700 >90 THU DEC 21 17 59 18 40 19 07 23 19 05 34 06 01 06 42 00 50 05 44 11 19 10.4 6.2 59 2254-0201 >90 FRI DEC 22 18 00 18 40 19 07 00 07 05 35 06 02 06 42 00 54 05 48 11 24 10.5 5.5 52 2341 0238 >90 SAT DEC 23 18 00 18 41 19 08 00 55 05 35 06 02 06 43 00 59 05 52 11 28 10.5 4.7 44 0020 0755 81 SUN DEC 24 18 01 18 41 19 08 01 44 05 36 06 03 06 43 01 03 05 56 11 33 10.5 3.9 36 0105 1237 70 MON DEC 25 18 01 18 42 19 09 02 36 05 36 06 03 06 44 01 08 06 00 11 37 10.5 3.0 28 0151 1653 59 TUE DEC 26 18 02 18 42 19 10 03 29 05 36 06 04 06 44 01 13 06 04 11 41 10.4 2.1 20 0241 2031 47 WED DEC 27 18 02 18 43 19 10 14 24 04 25 05 37 06 04 06 44 01 17 06 08 11 46 10.5 1.2 11 0334 2318 36 THU DEC 28 18 03 18 44 19 11 15 12 05 22 05 37 06 04 06 45 01 22 06 12 11 50 10.4 0.2 2 0431 2456 24 FRI DEC 29 18 04 18 44 19 11 16 07 06 18 05 38 06 05 06 45 01 26 06 16 11 54 10.5 0.0 0 0529 2513 12 SAT DEC 30 18 04 18 45 19 12 17 05 05 38 06 05 06 46 01 31 06 20 11 58 10.4 0.0 0 0629 2401 05 SUN DEC 31 18 05 18 45 19 12 18 07 05 38 06 06 06 46 01 35 06 23 12 02 10.4 0.0 0 0729 2120 15 ONE LINE REFERS TO EVENING DATE FULL MOON Dec 02 01:39 UT AND FOLLOWING MORNING. LAST QUARTER Dec 09 05:39 UT All dates and times are zone HST NEW MOON Dec 16 02:06 UT in upper table (except sid time). FIRST QUARTER Dec 23 21:45 UT FULL MOON Dec 31 16:47 UT