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 MAR 01 18 37 19 15 19 40 23 15 05 28 05 54 06 32 05 59 10 19 15 48 9.8 6.2 63 0250 2131 >90 MON MAR 02 18 37 19 15 19 41 00 18 05 28 05 53 06 31 06 04 10 23 15 52 9.8 5.2 52 0350 2435 89 TUE MAR 03 18 38 19 15 19 41 01 22 05 27 05 52 06 30 06 08 10 27 15 55 9.8 4.1 41 0450 2631 77 WED MAR 04 18 38 19 16 19 41 02 24 05 26 05 52 06 29 06 12 10 31 15 58 9.8 3.0 31 0553 2636 63 THU MAR 05 18 38 19 16 19 41 03 21 05 25 05 51 06 28 06 15 10 35 16 01 9.7 2.1 21 0657 2452 50 FRI MAR 06 18 39 19 16 19 42 14 13 04 13 05 25 05 50 06 28 06 20 10 39 16 05 9.7 1.2 12 0759 2128 38 SAT MAR 07 18 39 19 17 19 42 15 18 04 59 05 24 05 49 06 27 06 24 10 43 16 08 9.7 0.4 4 0857 1642 25 SUN MAR 08 18 39 19 17 19 42 16 21 05 41 05 23 05 49 06 26 06 28 10 47 16 11 9.7 0.0 0 0952 1058 16 MON MAR 09 18 40 19 17 19 43 17 22 06 21 05 22 05 48 06 25 06 33 10 51 16 14 9.6 0.0 0 1045 0440 15 TUE MAR 10 18 40 19 17 19 43 18 20 06 58 05 21 05 47 06 24 06 37 10 55 16 17 9.6 0.0 0 1136-0146 24 WED MAR 11 18 40 19 18 19 43 19 16 05 21 05 46 06 24 06 41 10 59 16 21 9.6 0.0 0 1226-0800 35 THU MAR 12 18 40 19 18 19 44 20 12 05 20 05 45 06 23 06 46 11 03 16 24 9.6 0.5 4 1316-1341 47 FRI MAR 13 18 41 19 18 19 44 21 08 05 19 05 44 06 22 06 50 11 07 16 27 9.6 1.4 14 1407-1836 59 SAT MAR 14 18 41 19 19 19 44 22 03 05 18 05 44 06 21 06 54 11 11 16 30 9.6 2.3 24 1459-2232 70 SUN MAR 15 18 41 19 19 19 44 22 59 05 17 05 43 06 20 06 58 11 15 16 32 9.5 3.2 34 1552-2515 81 MON MAR 16 18 42 19 19 19 45 23 53 05 16 05 42 06 19 07 03 11 19 16 35 9.5 4.1 43 1640-2623 >90 TUE MAR 17 18 42 19 19 19 45 00 45 05 15 05 41 06 19 07 07 11 22 16 38 9.5 5.0 52 1739-2708 >90 WED MAR 18 18 42 19 20 19 45 01 34 05 15 05 40 06 18 07 11 11 26 16 42 9.5 5.8 61 1832-2611 >90 THU MAR 19 18 42 19 20 19 46 02 19 05 14 05 39 06 17 07 16 11 30 16 45 9.5 6.6 69 1923-2405 >90 FRI MAR 20 18 43 19 20 19 46 03 01 05 13 05 38 06 16 07 20 11 34 16 48 9.5 7.3 76 2012-2058 >90 SAT MAR 21 18 43 19 21 19 46 03 39 14 44 05 12 05 38 06 15 07 24 11 38 16 51 9.4 7.9 83 2100-1658 >90 SUN MAR 22 18 43 19 21 19 47 04 16 15 36 05 11 05 37 06 14 07 28 11 42 16 54 9.4 8.5 90 2146-1215 >90 MON MAR 23 18 44 19 21 19 47 04 51 16 28 05 10 05 36 06 13 07 32 11 46 16 57 9.4 9.1 96 2231-0658 >90 TUE MAR 24 18 44 19 21 19 47 05 26 17 20 05 09 05 35 06 12 07 36 11 50 17 00 9.4 9.4 100 2317-0119 >90 WED MAR 25 18 44 19 22 19 47 06 01 18 13 05 08 05 34 06 12 07 40 11 54 17 03 9.4 9.4 100 0003 0431 >90 THU MAR 26 18 44 19 22 19 48 06 39 19 08 05 07 05 33 06 11 07 45 11 58 17 06 9.3 9.3 100 0051 1015 >90 FRI MAR 27 18 45 19 22 19 48 20 06 05 06 05 32 06 10 07 49 12 02 17 09 9.3 9.0 96 0142 1536 >90 SAT MAR 28 18 45 19 23 19 48 21 07 05 05 05 31 06 09 07 53 12 06 17 12 9.3 8.0 85 0237 2014 >90 SUN MAR 29 18 45 19 23 19 49 22 11 05 05 05 30 06 08 07 58 12 10 17 16 9.3 6.9 74 0335 2347 >90 MON MAR 30 18 45 19 23 19 49 23 15 05 04 05 29 06 07 08 02 12 14 17 19 9.2 5.8 62 0436 2554 >90 TUE MAR 31 18 46 19 24 19 49 00 18 05 03 05 29 06 06 08 06 12 18 17 21 9.2 4.8 51 0541 2610 90 ONE LINE REFERS TO EVENING DATE FIRST QUARTER Mar 04 07:45 UT AND FOLLOWING MORNING. FULL MOON Mar 11 02:38 UT All dates and times are zone HST LAST QUARTER Mar 18 17:47 UT in upper table (except sid time). NEW MOON Mar 26 16:05 UT