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 MON MAY 01 18 56 19 36 20 03 01 25 04 34 05 02 05 42 10 24 14 21 18 56 8.5 3.1 36 0911 1352 74 TUE MAY 02 18 56 19 36 20 04 02 07 04 34 05 01 05 41 10 29 14 25 19 00 8.5 2.5 28 1004 0813 64 WED MAY 03 18 56 19 36 20 04 02 47 04 33 05 01 05 41 10 33 14 29 19 03 8.5 1.8 20 1057 0201 55 THU MAY 04 18 57 19 37 20 05 14 53 03 27 04 32 05 00 05 40 10 38 14 33 19 06 8.4 1.1 12 1149-0423 47 FRI MAY 05 18 57 19 37 20 05 15 53 04 09 04 31 04 59 05 40 10 42 14 37 19 09 8.4 0.4 4 1243-1035 41 SAT MAY 06 18 58 19 38 20 06 16 53 04 53 04 31 04 59 05 39 10 47 14 41 19 13 8.4 0.0 0 1338-1614 39 SUN MAY 07 18 58 19 38 20 06 17 56 05 41 04 30 04 58 05 39 10 50 14 45 19 16 8.4 0.0 0 1436-2055 41 MON MAY 08 18 58 19 39 20 07 18 58 06 33 04 29 04 58 05 38 10 55 14 49 19 19 8.4 0.0 0 1535-2419 46 TUE MAY 09 18 59 19 39 20 08 20 00 04 29 04 57 05 38 11 00 14 53 19 23 8.3 0.0 0 1636-2613 52 WED MAY 10 18 59 19 40 20 08 20 59 04 28 04 57 05 37 11 04 14 57 19 26 8.3 0.9 10 1736-2632 60 THU MAY 11 19 00 19 40 20 09 21 53 04 28 04 56 05 37 11 09 15 01 19 30 8.3 1.7 20 1834-2523 69 FRI MAY 12 19 00 19 41 20 09 22 41 04 27 04 55 05 36 11 13 15 05 19 33 8.3 2.5 30 1928-2255 77 SAT MAY 13 19 00 19 41 20 10 23 24 04 26 04 55 05 36 11 18 15 09 19 35 8.3 3.2 39 2019-1929 86 SUN MAY 14 19 01 19 42 20 10 00 03 04 26 04 55 05 35 11 22 15 13 19 39 8.3 3.9 46 2107-1525 >90 MON MAY 15 19 01 19 42 20 11 00 38 04 25 04 54 05 35 11 27 15 17 19 42 8.2 4.5 54 2152-1047 >90 TUE MAY 16 19 02 19 43 20 12 01 11 04 25 04 54 05 35 11 32 15 21 19 46 8.2 5.0 60 2235-0550 >90 WED MAY 17 19 02 19 43 20 12 01 43 04 24 04 53 05 34 11 36 15 25 19 49 8.2 5.5 67 2318-0042 >90 THU MAY 18 19 03 19 44 20 13 02 15 14 27 04 24 04 53 05 34 11 41 15 28 19 53 8.2 6.0 73 2400 0428 >90 FRI MAY 19 19 03 19 44 20 13 02 49 15 16 04 23 04 52 05 34 11 45 15 32 19 56 8.2 6.6 80 0044 0931 >90 SAT MAY 20 19 03 19 45 20 14 03 25 16 07 04 23 04 52 05 33 11 50 15 36 20 00 8.1 7.2 88 0130 1415 >90 SUN MAY 21 19 04 19 45 20 14 04 06 17 00 04 23 04 52 05 33 11 54 15 40 20 04 8.1 7.9 96 0219 1827 >90 MON MAY 22 19 04 19 46 20 15 04 51 17 57 04 22 04 51 05 33 11 59 15 44 20 07 8.1 8.1 100 0311 2152 >90 TUE MAY 23 19 05 19 46 20 15 05 42 18 56 04 22 04 51 05 33 12 03 15 48 20 11 8.1 8.1 100 0407 2414 >90 WED MAY 24 19 05 19 47 20 16 06 39 19 56 04 21 04 51 05 32 12 08 15 52 20 14 8.1 8.1 100 0506 2515 >90 THU MAY 25 19 06 19 47 20 17 20 54 04 21 04 50 05 32 12 12 15 56 20 18 8.1 7.5 92 0605 2446 >90 FRI MAY 26 19 06 19 48 20 17 21 49 04 21 04 50 05 32 12 16 16 00 20 22 8.1 6.5 80 0705 2245 >90 SAT MAY 27 19 06 19 48 20 18 22 39 04 20 04 50 05 32 12 21 16 04 20 25 8.0 5.7 70 0803 1920 >90 SUN MAY 28 19 07 19 49 20 18 23 24 04 20 04 50 05 32 12 25 16 08 20 29 8.0 4.9 61 0858 1444 >90 MON MAY 29 19 07 19 49 20 19 00 07 04 20 04 50 05 31 12 30 16 12 20 33 8.0 4.2 52 0956 0854 >90 TUE MAY 30 19 08 19 50 20 19 00 47 04 20 04 49 05 31 12 34 16 16 20 36 8.0 3.6 44 1044 0315 82 WED MAY 31 19 08 19 50 20 20 01 26 04 19 04 49 05 31 12 39 16 20 20 39 8.0 2.9 36 1135-0256 73 ONE LINE REFERS TO EVENING DATE FIRST QUARTER May 02 02:26 UT AND FOLLOWING MORNING. FULL MOON May 08 19:51 UT All dates and times are zone HST LAST QUARTER May 16 10:43 UT in upper table (except sid time). NEW MOON May 24 08:17 UT FIRST QUARTER May 31 07:36 UT