KECK OBSERVATORY CALENDAR FOR 2041 -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 2041 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 JAN 01 18 05 18 45 19 12 06 53 17 14 05 39 06 06 06 46 01 39 06 28 12 08 10.4 10.4 100 1831-2639 >90 WED JAN 02 18 06 18 46 19 13 18 21 05 39 06 06 06 46 01 44 06 32 12 12 10.4 10.4 100 1938-2550 >90 THU JAN 03 18 06 18 47 19 14 19 30 05 39 06 06 06 47 01 49 06 36 12 16 10.4 10.2 97 2042-2310 >90 FRI JAN 04 18 07 18 47 19 14 20 38 05 40 06 07 06 47 01 53 06 40 12 21 10.4 9.0 86 2143-1858 >90 SAT JAN 05 18 07 18 48 19 15 21 44 05 40 06 07 06 47 01 58 06 44 12 24 10.4 7.9 76 2240-1339 >90 SUN JAN 06 18 08 18 48 19 15 22 44 05 40 06 07 06 47 02 02 06 47 12 28 10.4 6.9 66 2333-0741 >90 MON JAN 07 18 09 18 49 19 16 23 42 05 41 06 07 06 48 02 07 06 51 12 33 10.4 6.0 57 0024-0128 >90 TUE JAN 08 18 09 18 50 19 16 00 39 05 41 06 08 06 48 02 11 06 55 12 37 10.4 5.0 48 0113 0437 84 WED JAN 09 18 10 18 50 19 17 01 34 05 41 06 08 06 48 02 16 06 59 12 41 10.4 4.1 39 0201 1027 72 THU JAN 10 18 11 18 51 19 18 02 29 05 41 06 08 06 48 02 20 07 03 12 45 10.4 3.2 30 0250 1540 60 FRI JAN 11 18 11 18 51 19 18 03 24 05 42 06 08 06 48 02 24 07 07 12 50 10.4 2.3 22 0341 2006 48 SAT JAN 12 18 12 18 52 19 19 14 20 04 20 05 42 06 09 06 49 02 29 07 11 12 54 10.4 1.4 13 0433 2332 37 SUN JAN 13 18 12 18 53 19 19 15 05 05 15 05 42 06 09 06 49 02 33 07 15 12 58 10.4 0.4 4 0527 2550 26 MON JAN 14 18 13 18 53 19 20 15 53 06 09 05 42 06 09 06 49 02 38 07 19 13 02 10.4 0.0 0 0621 2650 15 TUE JAN 15 18 14 18 54 19 20 16 45 06 59 05 42 06 09 06 49 02 42 07 23 13 06 10.4 0.0 0 0716 2632 07 WED JAN 16 18 14 18 54 19 21 17 38 05 42 06 09 06 49 02 47 07 27 13 10 10.3 0.0 0 0809 2458 11 THU JAN 17 18 15 18 55 19 22 18 32 05 42 06 09 06 49 02 52 07 31 13 14 10.3 0.0 0 0900 2216 21 FRI JAN 18 18 16 18 55 19 22 19 24 05 43 06 09 06 49 02 56 07 35 13 19 10.3 0.0 0 0949 1838 32 SAT JAN 19 18 16 18 56 19 23 20 15 05 43 06 09 06 49 03 01 07 39 13 23 10.3 0.9 8 1036 1414 43 SUN JAN 20 18 17 18 57 19 23 21 05 05 43 06 09 06 49 03 05 07 43 13 27 10.3 1.7 16 1120 0918 53 MON JAN 21 18 18 18 57 19 24 21 54 05 43 06 09 06 49 03 10 07 47 13 31 10.3 2.5 24 1204 0400 65 TUE JAN 22 18 18 18 58 19 24 22 43 05 43 06 09 06 49 03 14 07 51 13 34 10.3 3.3 32 1247-0127 76 WED JAN 23 18 19 18 58 19 25 23 33 05 43 06 09 06 49 03 19 07 54 13 38 10.3 4.1 40 1331-0654 87 THU JAN 24 18 19 18 59 19 25 00 25 05 43 06 09 06 49 03 23 07 58 13 42 10.3 5.0 48 1418-1220 >90 FRI JAN 25 18 20 18 59 19 26 01 20 05 43 06 09 06 48 03 28 08 02 13 46 10.3 5.9 57 1508-1718 >90 SAT JAN 26 18 21 19 00 19 26 02 20 05 43 06 09 06 48 03 32 08 06 13 50 10.3 6.9 67 1602-2135 >90 SUN JAN 27 18 21 19 01 19 27 03 23 05 42 06 09 06 48 03 37 08 10 13 53 10.2 7.9 77 1700-2448 >90 MON JAN 28 18 22 19 01 19 27 04 29 14 53 05 42 06 09 06 48 03 40 08 14 13 57 10.2 9.0 88 1803-2634 >90 TUE JAN 29 18 22 19 02 19 28 05 34 15 56 05 42 06 08 06 48 03 45 08 18 14 01 10.2 10.1 98 1908-2632 >90 WED JAN 30 18 23 19 02 19 28 06 35 17 04 05 42 06 08 06 47 03 49 08 22 14 05 10.2 10.2 100 2014-2436 >90 THU JAN 31 18 24 19 03 19 29 18 14 05 42 06 08 06 47 03 54 08 26 14 09 10.2 10.2 100 2117-2056 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Jan 02 19:07 UT AND FOLLOWING MORNING. FIRST QUARTER Jan 09 10:05 UT All dates and times are zone HST FULL MOON Jan 17 07:10 UT in upper table (except sid time). LAST QUARTER Jan 25 10:35 UT