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 TUE FEB 01 18 24 19 03 19 29 23 38 05 42 06 08 06 47 03 55 08 27 14 10 10.2 6.1 59 0129 1458 >90 WED FEB 02 18 25 19 04 19 30 00 32 05 41 06 08 06 46 04 00 08 31 14 12 10.2 5.2 50 0219 1916 86 THU FEB 03 18 25 19 04 19 30 01 29 05 41 06 07 06 46 04 04 08 35 14 16 10.2 4.2 41 0311 2256 74 FRI FEB 04 18 26 19 05 19 31 02 29 05 41 06 07 06 46 04 09 08 38 14 20 10.2 3.2 31 0408 2527 62 SAT FEB 05 18 26 19 05 19 31 03 30 05 41 06 07 06 45 04 13 08 42 14 24 10.2 2.2 21 0509 2633 49 SUN FEB 06 18 27 19 06 19 32 14 13 04 30 05 40 06 06 06 45 04 18 08 46 14 27 10.1 1.2 11 0613 2557 36 MON FEB 07 18 27 19 06 19 32 15 19 05 27 05 40 06 06 06 45 04 22 08 50 14 31 10.1 0.2 2 0718 2331 22 TUE FEB 08 18 28 19 07 19 32 16 27 06 18 05 40 06 06 06 44 04 25 08 54 14 35 10.1 0.0 0 0821 1924 08 WED FEB 09 18 28 19 07 19 33 17 35 05 39 06 05 06 44 04 30 08 58 14 38 10.1 0.0 0 0921 1354 08 THU FEB 10 18 29 19 07 19 33 18 41 05 39 06 05 06 43 04 34 09 02 14 42 10.1 0.0 0 1019 0729 22 FRI FEB 11 18 29 19 08 19 34 19 44 05 39 06 04 06 43 04 39 09 06 14 46 10.1 0.2 1 1114 0041 37 SAT FEB 12 18 30 19 08 19 34 20 46 05 38 06 04 06 42 04 43 09 10 14 49 10.1 1.2 11 1208-0602 51 SUN FEB 13 18 30 19 09 19 35 21 47 05 38 06 04 06 42 04 48 09 14 14 53 10.0 2.2 21 1302-1215 65 MON FEB 14 18 31 19 09 19 35 22 47 05 37 06 03 06 41 04 52 09 18 14 56 10.0 3.2 31 1356-1734 78 TUE FEB 15 18 31 19 10 19 35 23 48 05 37 06 03 06 41 04 56 09 22 15 00 10.0 4.2 42 1449-2135 >90 WED FEB 16 18 32 19 10 19 36 00 47 05 36 06 02 06 40 05 01 09 26 15 03 10.0 5.2 51 1547-2448 >90 THU FEB 17 18 32 19 10 19 36 01 44 05 36 06 01 06 40 05 05 09 30 15 07 10.0 6.1 61 1643-2624 >90 FRI FEB 18 18 33 19 11 19 36 02 38 05 35 06 01 06 39 05 09 09 34 15 10 10.0 7.0 70 1739-2637 >90 SAT FEB 19 18 33 19 11 19 37 03 27 14 01 05 35 06 00 06 38 05 14 09 38 15 14 10.0 7.8 78 1833-2533 >90 SUN FEB 20 18 33 19 11 19 37 04 13 14 55 05 34 06 00 06 38 05 18 09 42 15 16 9.9 8.6 86 1924-2321 >90 MON FEB 21 18 34 19 12 19 38 04 54 15 48 05 34 05 59 06 37 05 23 09 45 15 20 9.9 9.3 93 2013-2011 >90 TUE FEB 22 18 34 19 12 19 38 05 31 16 40 05 33 05 59 06 36 05 27 09 49 15 23 9.9 9.9 99 2059-1615 >90 WED FEB 23 18 35 19 13 19 38 06 05 17 30 05 32 05 58 06 36 05 31 09 53 15 26 9.9 9.9 100 2144-1144 >90 THU FEB 24 18 35 19 13 19 39 06 38 18 18 05 32 05 57 06 35 05 36 09 57 15 30 9.9 9.9 100 2226-0648 >90 FRI FEB 25 18 35 19 13 19 39 19 06 05 31 05 57 06 34 05 40 10 01 15 33 9.9 9.9 100 2308-0139 >90 SAT FEB 26 18 36 19 14 19 39 19 54 05 30 05 56 06 34 05 43 10 05 15 36 9.9 9.6 97 2351 0335 >90 SUN FEB 27 18 36 19 14 19 40 20 43 05 30 05 55 06 33 05 48 10 09 15 40 9.8 8.8 89 0034 0843 >90 MON FEB 28 18 37 19 14 19 40 21 33 05 29 05 55 06 32 05 52 10 13 15 43 9.8 7.9 80 0118 1337 >90 TUE FEB 29 18 37 19 15 19 40 22 26 05 28 05 54 06 32 05 56 10 17 15 46 9.8 7.0 71 0206 1802 >90 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Feb 03 19:12 UT AND FOLLOWING MORNING. FULL MOON Feb 10 15:02 UT All dates and times are zone HST LAST QUARTER Feb 17 08:08 UT in upper table (except sid time). NEW MOON Feb 25 10:37 UT