KECK OBSERVATORY CALENDAR FOR 2009 -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 2009 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 SUN FEB 01 18 24 19 03 19 29 00 20 05 42 06 08 06 47 03 57 08 29 14 12 10.2 5.4 52 0208 1816 89 MON FEB 02 18 25 19 04 19 30 01 22 05 41 06 08 06 46 04 02 08 33 14 15 10.2 4.3 42 0303 2237 76 TUE FEB 03 18 25 19 04 19 30 02 26 05 41 06 07 06 46 04 06 08 37 14 19 10.2 3.2 31 0403 2537 63 WED FEB 04 18 26 19 05 19 31 03 32 05 41 06 07 06 46 04 11 08 41 14 23 10.2 2.2 21 0507 2700 49 THU FEB 05 18 26 19 05 19 31 14 13 04 34 05 41 06 07 06 45 04 15 08 45 14 27 10.2 1.1 10 0614 2629 35 FRI FEB 06 18 27 19 06 19 32 15 21 05 31 05 40 06 06 06 45 04 20 08 49 14 30 10.1 0.2 1 0719 2404 21 SAT FEB 07 18 27 19 06 19 32 16 29 06 22 05 40 06 06 06 45 04 24 08 53 14 34 10.1 0.0 0 0822 1957 07 SUN FEB 08 18 28 19 07 19 32 17 36 05 40 06 06 06 44 04 28 08 57 14 38 10.1 0.0 0 0921 1433 08 MON FEB 09 18 28 19 07 19 33 18 39 05 39 06 05 06 44 04 33 09 01 14 40 10.1 0.0 0 1016 0822 22 TUE FEB 10 18 29 19 07 19 33 19 39 05 39 06 05 06 43 04 37 09 04 14 44 10.1 0.1 0 1109 0153 35 WED FEB 11 18 29 19 08 19 34 20 36 05 39 06 04 06 43 04 42 09 08 14 48 10.1 1.0 10 1159-0431 48 THU FEB 12 18 30 19 08 19 34 21 32 05 38 06 04 06 42 04 46 09 12 14 51 10.1 2.0 19 1248-1029 61 FRI FEB 13 18 30 19 09 19 35 22 27 05 38 06 04 06 42 04 51 09 16 14 55 10.0 2.9 28 1337-1548 73 SAT FEB 14 18 31 19 09 19 35 23 21 05 37 06 03 06 41 04 55 09 20 14 58 10.0 3.8 37 1427-2009 85 SUN FEB 15 18 31 19 10 19 35 00 16 05 37 06 03 06 41 04 58 09 24 15 02 10.0 4.7 46 1518-2338 >90 MON FEB 16 18 32 19 10 19 36 01 10 05 36 06 02 06 40 05 03 09 28 15 05 10.0 5.6 55 1610-2557 >90 TUE FEB 17 18 32 19 10 19 36 02 03 05 36 06 01 06 40 05 07 09 32 15 09 10.0 6.4 64 1703-2703 >90 WED FEB 18 18 33 19 11 19 36 02 53 05 35 06 01 06 39 05 11 09 36 15 12 10.0 7.3 72 1756-2656 >90 THU FEB 19 18 33 19 11 19 37 03 40 14 15 05 35 06 00 06 38 05 16 09 40 15 16 10.0 8.0 80 1848-2537 >90 FRI FEB 20 18 33 19 11 19 37 04 24 15 08 05 34 06 00 06 38 05 20 09 44 15 19 9.9 8.8 88 1938-2311 >90 SAT FEB 21 18 34 19 12 19 38 05 05 16 01 05 34 05 59 06 37 05 25 09 48 15 23 9.9 9.5 95 2027-1946 >90 SUN FEB 22 18 34 19 12 19 38 05 43 16 53 05 33 05 59 06 36 05 29 09 52 15 26 9.9 9.9 100 2114-1529 >90 MON FEB 23 18 35 19 13 19 38 06 18 17 45 05 32 05 58 06 36 05 33 09 56 15 29 9.9 9.9 100 2200-1033 >90 TUE FEB 24 18 35 19 13 19 39 06 53 18 37 05 32 05 57 06 35 05 38 10 00 15 33 9.9 9.9 100 2245-0507 >90 WED FEB 25 18 35 19 13 19 39 19 29 05 31 05 57 06 34 05 42 10 04 15 36 9.9 9.9 100 2330 0035 >90 THU FEB 26 18 36 19 14 19 39 20 22 05 30 05 56 06 34 05 46 10 08 15 38 9.9 9.1 92 0016 0622 >90 FRI FEB 27 18 36 19 14 19 40 21 17 05 30 05 55 06 33 05 51 10 11 15 42 9.8 8.2 83 0104 1159 >90 SAT FEB 28 18 37 19 14 19 40 22 14 05 29 05 55 06 32 05 55 10 15 15 45 9.8 7.2 73 0155 1708 >90 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Feb 02 23:13 UT AND FOLLOWING MORNING. FULL MOON Feb 09 14:48 UT All dates and times are zone HST LAST QUARTER Feb 16 21:36 UT in upper table (except sid time). NEW MOON Feb 25 01:35 UT