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 FRI FEB 01 18 24 19 03 19 29 19 22 05 42 06 08 06 47 03 58 08 30 14 13 10.2 10.2 100 2217-1553 >90 SAT FEB 02 18 25 19 04 19 30 20 27 05 41 06 08 06 46 04 03 08 34 14 16 10.2 9.2 90 2313-0955 >90 SUN FEB 03 18 25 19 04 19 30 21 29 05 41 06 07 06 46 04 07 08 38 14 20 10.2 8.2 80 0006-0331 >90 MON FEB 04 18 26 19 05 19 31 22 28 05 41 06 07 06 46 04 12 08 42 14 24 10.2 7.2 70 0057 0254 >90 TUE FEB 05 18 26 19 05 19 31 23 26 05 41 06 07 06 45 04 16 08 46 14 28 10.2 6.3 61 0146 0859 >90 WED FEB 06 18 27 19 06 19 32 00 22 05 40 06 06 06 45 04 21 08 50 14 31 10.1 5.3 52 0237 1423 88 THU FEB 07 18 27 19 06 19 32 01 19 05 40 06 06 06 45 04 25 08 54 14 35 10.1 4.3 42 0327 1911 76 FRI FEB 08 18 28 19 07 19 32 02 15 05 40 06 06 06 44 04 29 08 58 14 39 10.1 3.4 33 0419 2254 64 SAT FEB 09 18 28 19 07 19 33 03 11 05 39 06 05 06 44 04 34 09 02 14 41 10.1 2.5 24 0512 2528 53 SUN FEB 10 18 29 19 07 19 33 04 05 05 39 06 05 06 43 04 38 09 05 14 45 10.1 1.6 15 0606 2647 42 MON FEB 11 18 29 19 08 19 34 14 41 04 56 05 39 06 04 06 43 04 43 09 09 14 49 10.1 0.7 7 0701 2647 30 TUE FEB 12 18 30 19 08 19 34 15 33 05 43 05 38 06 04 06 42 04 47 09 13 14 52 10.1 0.0 0 0754 2531 19 WED FEB 13 18 30 19 09 19 35 16 26 06 25 05 38 06 03 06 42 04 52 09 17 14 56 10.0 0.0 0 0846 2305 08 THU FEB 14 18 31 19 09 19 35 17 19 05 37 06 03 06 41 04 56 09 21 14 59 10.0 0.0 0 0935 1939 03 FRI FEB 15 18 31 19 10 19 35 18 11 05 37 06 03 06 41 04 59 09 25 15 03 10.0 0.0 0 1022 1523 14 SAT FEB 16 18 32 19 10 19 36 19 01 05 36 06 02 06 40 05 04 09 29 15 06 10.0 0.0 0 1108 1030 26 SUN FEB 17 18 32 19 10 19 36 19 51 05 36 06 01 06 40 05 08 09 33 15 10 10.0 0.2 2 1152 0512 37 MON FEB 18 18 33 19 11 19 36 20 40 05 35 06 01 06 39 05 12 09 37 15 13 10.0 1.1 10 1236-0020 48 TUE FEB 19 18 33 19 11 19 37 21 29 05 35 06 00 06 38 05 17 09 41 15 17 10.0 1.9 18 1320-0555 60 WED FEB 20 18 33 19 11 19 37 22 20 05 34 06 00 06 38 05 21 09 45 15 20 9.9 2.7 27 1405-1121 71 THU FEB 21 18 34 19 12 19 38 23 13 05 34 05 59 06 37 05 26 09 49 15 24 9.9 3.6 36 1453-1619 83 FRI FEB 22 18 34 19 12 19 38 00 09 05 33 05 59 06 36 05 30 09 53 15 27 9.9 4.5 45 1545-2047 >90 SAT FEB 23 18 35 19 13 19 38 01 09 05 32 05 58 06 36 05 34 09 57 15 30 9.9 5.5 55 1641-2416 >90 SUN FEB 24 18 35 19 13 19 39 02 12 05 32 05 57 06 35 05 39 10 01 15 34 9.9 6.6 66 1740-2629 >90 MON FEB 25 18 35 19 13 19 39 03 15 05 31 05 57 06 34 05 43 10 05 15 37 9.9 7.6 77 1843-2705 >90 TUE FEB 26 18 36 19 14 19 39 04 16 14 41 05 30 05 56 06 34 05 47 10 09 15 39 9.9 8.6 87 1947-2553 >90 WED FEB 27 18 36 19 14 19 40 05 13 15 49 05 30 05 55 06 33 05 52 10 12 15 43 9.8 9.6 97 2050-2255 >90 THU FEB 28 18 37 19 14 19 40 06 03 16 57 05 29 05 55 06 32 05 56 10 16 15 46 9.8 9.8 100 2151-1823 >90 ONE LINE REFERS TO EVENING DATE NEW MOON Feb 01 05:41 UT AND FOLLOWING MORNING. FIRST QUARTER Feb 07 23:39 UT All dates and times are zone HST FULL MOON Feb 16 02:22 UT in upper table (except sid time). LAST QUARTER Feb 24 00:31 UT