KECK OBSERVATORY CALENDAR FOR 2010 -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 2010 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 SAT MAY 01 18 55 19 35 20 03 22 04 04 35 05 03 05 42 10 21 14 19 18 55 8.5 2.0 23 1803-2511 71 SUN MAY 02 18 56 19 36 20 03 22 53 04 34 05 02 05 42 10 25 14 23 18 58 8.5 2.8 33 1857-2322 80 MON MAY 03 18 56 19 36 20 04 23 38 04 34 05 01 05 41 10 30 14 27 19 02 8.5 3.6 41 1948-2029 89 TUE MAY 04 18 56 19 36 20 04 00 18 04 33 05 01 05 41 10 34 14 31 19 05 8.5 4.2 49 2037-1702 >90 WED MAY 05 18 57 19 37 20 05 00 54 04 32 05 00 05 40 10 39 14 35 19 07 8.4 4.8 57 2123-1250 >90 THU MAY 06 18 57 19 37 20 05 01 29 04 31 04 59 05 40 10 43 14 39 19 10 8.4 5.4 64 2207-0812 >90 FRI MAY 07 18 58 19 38 20 06 02 02 04 31 04 59 05 39 10 48 14 43 19 14 8.4 5.9 70 2250-0318 >90 SAT MAY 08 18 58 19 38 20 06 02 35 14 38 04 30 04 58 05 39 10 52 14 47 19 17 8.4 6.5 77 2334 0145 >90 SUN MAY 09 18 58 19 39 20 07 03 09 15 27 04 29 04 58 05 38 10 57 14 50 19 20 8.4 7.0 84 0018 0647 >90 MON MAY 10 18 59 19 39 20 08 03 45 16 18 04 29 04 57 05 38 11 02 14 54 19 24 8.3 7.6 91 0104 1137 >90 TUE MAY 11 18 59 19 40 20 08 04 25 17 12 04 28 04 57 05 37 11 06 14 58 19 27 8.3 8.3 99 0152 1603 >90 WED MAY 12 19 00 19 40 20 09 05 10 18 08 04 28 04 56 05 37 11 11 15 02 19 31 8.3 8.3 100 0244 1949 >90 THU MAY 13 19 00 19 41 20 09 06 00 19 08 04 27 04 55 05 36 11 15 15 06 19 34 8.3 8.3 100 0339 2237 >90 FRI MAY 14 19 00 19 41 20 10 06 56 20 08 04 26 04 55 05 36 11 20 15 10 19 37 8.3 8.3 100 0438 2411 >90 SAT MAY 15 19 01 19 42 20 10 21 08 04 26 04 54 05 35 11 23 15 14 19 41 8.3 7.3 88 0538 2418 >90 SUN MAY 16 19 01 19 42 20 11 22 05 04 25 04 54 05 35 11 28 15 18 19 44 8.2 6.3 76 0638 2253 >90 MON MAY 17 19 02 19 43 20 12 22 57 04 25 04 54 05 35 11 33 15 22 19 48 8.2 5.5 66 0737 2001 >90 TUE MAY 18 19 02 19 43 20 12 23 45 04 24 04 53 05 34 11 37 15 26 19 51 8.2 4.7 56 0834 1555 >90 WED MAY 19 19 03 19 44 20 13 00 29 04 24 04 53 05 34 11 42 15 30 19 55 8.2 3.9 47 0929 1047 87 THU MAY 20 19 03 19 44 20 13 01 10 04 23 04 52 05 34 11 46 15 34 19 58 8.2 3.2 39 1021 0510 77 FRI MAY 21 19 03 19 45 20 14 01 50 04 23 04 52 05 33 11 51 15 38 20 01 8.1 2.5 31 1113-0047 68 SAT MAY 22 19 04 19 45 20 14 14 02 02 30 04 23 04 52 05 33 11 55 15 42 20 05 8.1 1.9 23 1204-0644 60 SUN MAY 23 19 04 19 46 20 15 15 00 03 11 04 22 04 51 05 33 12 00 15 46 20 08 8.1 1.2 14 1257-1221 53 MON MAY 24 19 05 19 46 20 15 15 59 03 55 04 22 04 51 05 33 12 04 15 50 20 12 8.1 0.5 5 1351-1719 47 TUE MAY 25 19 05 19 47 20 16 16 59 04 42 04 21 04 51 05 32 12 09 15 54 20 15 8.1 0.0 0 1447-2119 44 WED MAY 26 19 06 19 47 20 17 17 58 05 33 04 21 04 50 05 32 12 14 15 57 20 19 8.1 0.0 0 1545-2407 44 THU MAY 27 19 06 19 48 20 17 18 57 06 27 04 21 04 50 05 32 12 18 16 01 20 23 8.1 0.0 0 1643-2532 46 FRI MAY 28 19 06 19 48 20 18 19 53 04 20 04 50 05 32 12 23 16 05 20 26 8.0 0.0 0 1741-2532 51 SAT MAY 29 19 07 19 49 20 18 20 44 04 20 04 50 05 32 12 27 16 09 20 30 8.0 0.4 5 1837-2411 57 SUN MAY 30 19 07 19 49 20 19 21 31 04 20 04 49 05 31 12 32 16 13 20 34 8.0 1.2 14 1930-2143 64 MON MAY 31 19 08 19 50 20 19 22 13 04 20 04 49 05 31 12 36 16 17 20 38 8.0 1.9 23 2020-1820 71 ONE LINE REFERS TO EVENING DATE LAST QUARTER May 06 04:15 UT AND FOLLOWING MORNING. NEW MOON May 14 01:05 UT All dates and times are zone HST FIRST QUARTER May 20 23:42 UT in upper table (except sid time). FULL MOON May 27 23:09 UT