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 SEP 01 18 47 19 25 19 52 17 09 05 16 04 52 05 18 05 57 18 18 22 26 03 19 9.0 0.0 0 2138-1146 34 SAT SEP 02 18 46 19 24 19 51 17 43 06 04 04 52 05 19 05 57 18 21 22 30 03 23 9.0 0.0 0 2223-0648 27 SUN SEP 03 18 45 19 23 19 50 18 16 06 52 04 53 05 19 05 57 18 24 22 34 03 28 9.0 0.0 0 2306-0137 23 MON SEP 04 18 44 19 22 19 49 18 48 04 53 05 19 05 57 18 27 22 38 03 32 9.1 0.0 0 2349 0335 24 TUE SEP 05 18 43 19 21 19 48 19 20 04 53 05 19 05 57 18 29 22 42 03 36 9.1 0.0 0 0033 0839 29 WED SEP 06 18 43 19 21 19 47 19 54 04 54 05 20 05 58 18 32 22 46 03 41 9.1 0.1 1 0118 1323 37 THU SEP 07 18 42 19 20 19 46 20 30 04 54 05 20 05 58 18 35 22 50 03 45 9.1 0.7 8 0206 1737 46 FRI SEP 08 18 41 19 19 19 45 21 10 04 54 05 20 05 58 18 38 22 54 03 49 9.2 1.4 15 0255 2109 56 SAT SEP 09 18 40 19 18 19 44 21 55 04 54 05 20 05 58 18 41 22 58 03 53 9.2 2.2 23 0348 2344 67 SUN SEP 10 18 39 19 17 19 43 22 44 04 55 05 21 05 59 18 44 23 02 03 58 9.2 3.0 32 0443 2509 78 MON SEP 11 18 38 19 16 19 42 23 39 04 55 05 21 05 59 18 47 23 06 04 02 9.2 3.9 42 0539 2508 89 TUE SEP 12 18 37 19 15 19 41 00 39 04 55 05 21 05 59 18 50 23 10 04 06 9.2 5.0 53 0639 2356 >90 WED SEP 13 18 36 19 14 19 40 01 42 14 45 04 56 05 21 05 59 18 53 23 14 04 11 9.3 6.0 65 0738 2108 >90 THU SEP 14 18 35 19 13 19 39 02 46 15 34 04 56 05 22 05 59 18 56 23 18 04 14 9.3 7.1 76 0835 1659 >90 FRI SEP 15 18 34 19 12 19 38 03 50 16 21 04 56 05 22 06 00 18 59 23 22 04 18 9.3 8.2 88 0931 1144 >90 SAT SEP 16 18 33 19 11 19 37 04 53 17 05 04 56 05 22 06 00 19 02 23 26 04 22 9.3 9.3 99 1026 0542 >90 SUN SEP 17 18 32 19 10 19 36 05 57 17 48 04 57 05 22 06 00 19 05 23 29 04 27 9.3 9.3 100 1120-0045 >90 MON SEP 18 18 32 19 09 19 35 18 31 04 57 05 23 06 00 19 08 23 33 04 31 9.4 9.4 100 1215-0711 >90 TUE SEP 19 18 31 19 08 19 34 19 15 04 57 05 23 06 00 19 11 23 37 04 35 9.4 9.4 100 1310-1310 >90 WED SEP 20 18 30 19 07 19 33 20 02 04 57 05 23 06 01 19 14 23 41 04 39 9.4 8.9 94 1407-1818 >90 THU SEP 21 18 29 19 06 19 32 20 53 04 58 05 23 06 01 19 17 23 45 04 44 9.4 8.1 85 1506-2215 >90 FRI SEP 22 18 28 19 05 19 31 21 46 04 58 05 23 06 01 19 19 23 49 04 48 9.5 7.2 76 1605-2447 >90 SAT SEP 23 18 27 19 05 19 30 22 42 04 58 05 24 06 01 19 22 23 53 04 52 9.5 6.3 66 1704-2548 >90 SUN SEP 24 18 26 19 04 19 29 23 39 04 58 05 24 06 01 19 25 23 57 04 56 9.5 5.3 56 1802-2522 >90 MON SEP 25 18 25 19 03 19 28 00 36 04 59 05 24 06 02 19 28 00 01 05 01 9.5 4.4 46 1858-2334 86 TUE SEP 26 18 24 19 02 19 27 01 30 04 59 05 24 06 02 19 31 00 05 05 05 9.5 3.5 36 1949-2050 75 WED SEP 27 18 23 19 01 19 26 14 32 02 22 04 59 05 25 06 02 19 34 00 09 05 09 9.6 2.6 27 2038-1708 64 THU SEP 28 18 23 19 00 19 26 15 10 03 13 04 59 05 25 06 02 19 38 00 13 05 13 9.6 1.8 18 2125-1247 53 FRI SEP 29 18 22 18 59 19 25 15 44 04 01 05 00 05 25 06 03 19 41 00 17 05 18 9.6 1.0 10 2210-0759 42 SAT SEP 30 18 21 18 58 19 24 16 17 04 49 05 00 05 25 06 03 19 44 00 21 05 22 9.6 0.2 1 2254-0254 31 ONE LINE REFERS TO EVENING DATE FULL MOON Sep 03 23:47 UT AND FOLLOWING MORNING. LAST QUARTER Sep 12 00:46 UT All dates and times are zone HST NEW MOON Sep 18 18:24 UT in upper table (except sid time). FIRST QUARTER Sep 25 13:08 UT