KECK OBSERVATORY CALENDAR FOR 2013 -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 2013 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 MAR 01 18 37 19 15 19 40 22 17 05 28 05 54 06 32 05 59 10 20 15 48 9.8 2.6 26 1430-1554 71 SAT MAR 02 18 37 19 15 19 41 23 17 05 28 05 53 06 31 06 04 10 23 15 52 9.8 3.6 36 1528-1835 84 SUN MAR 03 18 38 19 15 19 41 00 17 05 27 05 52 06 30 06 08 10 27 15 55 9.8 4.6 47 1628-2017 >90 MON MAR 04 18 38 19 16 19 41 01 16 05 26 05 52 06 29 06 12 10 31 15 58 9.8 5.6 57 1728-2040 >90 TUE MAR 05 18 38 19 16 19 41 02 13 05 25 05 51 06 28 06 16 10 35 16 01 9.7 6.5 67 1828-1947 >90 WED MAR 06 18 39 19 16 19 42 03 07 14 03 05 25 05 50 06 28 06 21 10 39 16 05 9.7 7.4 76 1926-1742 >90 THU MAR 07 18 39 19 17 19 42 03 57 15 04 05 24 05 49 06 27 06 24 10 43 16 08 9.7 8.2 85 2023-1436 >90 FRI MAR 08 18 39 19 17 19 42 04 43 16 04 05 23 05 49 06 26 06 28 10 47 16 11 9.7 9.0 93 2118-1044 >90 SAT MAR 09 18 40 19 17 19 43 05 27 17 02 05 22 05 48 06 25 06 33 10 51 16 14 9.6 9.6 100 2210-0621 >90 SUN MAR 10 18 40 19 17 19 43 06 09 17 59 05 21 05 47 06 24 06 37 10 55 16 17 9.6 9.6 100 2301-0144 >90 MON MAR 11 18 40 19 18 19 43 06 49 18 55 05 21 05 46 06 24 06 41 10 59 16 21 9.6 9.6 100 2350 0252 >90 TUE MAR 12 18 40 19 18 19 44 19 49 05 20 05 45 06 23 06 46 11 03 16 24 9.6 9.5 99 0039 0713 >90 WED MAR 13 18 41 19 18 19 44 20 43 05 19 05 44 06 22 06 50 11 07 16 27 9.6 8.6 89 0128 1108 >90 THU MAR 14 18 41 19 19 19 44 21 36 05 18 05 44 06 21 06 54 11 11 16 30 9.6 7.7 80 0217 1428 >90 FRI MAR 15 18 41 19 19 19 44 22 28 05 17 05 43 06 20 06 58 11 15 16 33 9.5 6.8 71 0307 1706 >90 SAT MAR 16 18 42 19 19 19 45 23 19 05 16 05 42 06 19 07 03 11 19 16 36 9.5 5.9 62 0357 1855 >90 SUN MAR 17 18 42 19 19 19 45 00 09 05 15 05 41 06 19 07 07 11 23 16 38 9.5 5.1 53 0451 1932 >90 MON MAR 18 18 42 19 20 19 45 00 57 05 15 05 40 06 18 07 11 11 27 16 42 9.5 4.3 45 0538 1955 81 TUE MAR 19 18 42 19 20 19 46 01 43 05 14 05 39 06 17 07 16 11 30 16 45 9.5 3.5 37 0628 1905 71 WED MAR 20 18 43 19 20 19 46 02 27 05 13 05 38 06 16 07 20 11 34 16 48 9.5 2.8 29 0718 1722 60 THU MAR 21 18 43 19 21 19 46 03 10 05 12 05 38 06 15 07 24 11 38 16 51 9.4 2.0 21 0808 1449 50 FRI MAR 22 18 43 19 21 19 47 14 30 03 51 05 11 05 37 06 14 07 29 11 42 16 54 9.4 1.3 14 0858 1131 40 SAT MAR 23 18 44 19 21 19 47 15 23 04 31 05 10 05 36 06 13 07 33 11 46 16 57 9.4 0.7 6 0947 0734 31 SUN MAR 24 18 44 19 21 19 47 16 17 05 11 05 09 05 35 06 12 07 36 11 50 17 00 9.4 0.0 0 1038 0309 24 MON MAR 25 18 44 19 22 19 47 17 12 05 52 05 08 05 34 06 12 07 40 11 54 17 03 9.4 0.0 0 1129-0134 22 TUE MAR 26 18 44 19 22 19 48 18 08 06 35 05 07 05 33 06 11 07 45 11 58 17 06 9.3 0.0 0 1221-0620 27 WED MAR 27 18 45 19 22 19 48 19 06 05 06 05 32 06 10 07 49 12 02 17 09 9.3 0.0 0 1316-1052 36 THU MAR 28 18 45 19 23 19 48 20 07 05 05 05 31 06 09 07 53 12 06 17 12 9.3 0.3 3 1413-1450 47 FRI MAR 29 18 45 19 23 19 49 21 08 05 05 05 30 06 08 07 58 12 10 17 16 9.3 1.3 14 1512-1758 58 SAT MAR 30 18 45 19 23 19 49 22 10 05 04 05 29 06 07 08 02 12 14 17 19 9.2 2.3 25 1612-1957 71 SUN MAR 31 18 46 19 24 19 49 23 11 05 03 05 29 06 06 08 06 12 18 17 22 9.2 3.4 36 1714-2035 83 ONE LINE REFERS TO EVENING DATE LAST QUARTER Mar 04 21:54 UT AND FOLLOWING MORNING. NEW MOON Mar 11 19:52 UT All dates and times are zone HST FIRST QUARTER Mar 19 17:26 UT in upper table (except sid time). FULL MOON Mar 27 09:27 UT