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 FRI JAN 01 18 05 18 45 19 12 19 11 05 39 06 06 06 46 01 37 06 26 12 06 10.4 0.0 0 0828 1752 29 SAT JAN 02 18 06 18 46 19 13 20 17 05 39 06 06 06 46 01 42 06 30 12 10 10.4 1.1 10 0927 1223 43 SUN JAN 03 18 06 18 47 19 14 21 20 05 39 06 06 06 47 01 47 06 34 12 14 10.4 2.1 20 1022 0616 57 MON JAN 04 18 07 18 47 19 14 22 20 05 40 06 07 06 47 01 51 06 38 12 19 10.4 3.1 29 1115-0002 71 TUE JAN 05 18 07 18 48 19 15 23 18 05 40 06 07 06 47 01 56 06 42 12 23 10.4 4.0 38 1206-0604 84 WED JAN 06 18 08 18 48 19 15 00 15 05 40 06 07 06 48 02 00 06 46 12 26 10.4 5.0 48 1257-1144 >90 THU JAN 07 18 09 18 49 19 16 01 11 05 41 06 07 06 48 02 05 06 49 12 31 10.4 5.9 56 1348-1637 >90 FRI JAN 08 18 09 18 50 19 16 02 08 05 41 06 08 06 48 02 09 06 53 12 35 10.4 6.9 65 1439-2035 >90 SAT JAN 09 18 10 18 50 19 17 03 04 05 41 06 08 06 48 02 14 06 57 12 39 10.4 7.8 74 1532-2330 >90 SUN JAN 10 18 11 18 51 19 18 03 59 14 34 05 41 06 08 06 48 02 19 07 01 12 43 10.4 8.7 83 1626-2514 >90 MON JAN 11 18 11 18 51 19 18 04 51 15 25 05 42 06 08 06 48 02 22 07 05 12 48 10.4 9.6 91 1719-2545 >90 TUE JAN 12 18 12 18 52 19 19 05 41 16 17 05 42 06 09 06 49 02 27 07 09 12 52 10.4 10.4 99 1812-2502 >90 WED JAN 13 18 12 18 53 19 19 06 27 17 10 05 42 06 09 06 49 02 31 07 13 12 56 10.4 10.4 100 1904-2312 >90 THU JAN 14 18 13 18 53 19 20 18 03 05 42 06 09 06 49 02 36 07 17 13 00 10.4 10.4 100 1953-2023 >90 FRI JAN 15 18 14 18 54 19 20 18 54 05 42 06 09 06 49 02 40 07 21 13 04 10.4 10.4 100 2040-1646 >90 SAT JAN 16 18 14 18 54 19 21 19 44 05 42 06 09 06 49 02 45 07 25 13 08 10.3 10.0 96 2124-1231 >90 SUN JAN 17 18 15 18 55 19 22 20 33 05 42 06 09 06 49 02 50 07 29 13 12 10.3 9.2 88 2208-0749 >90 MON JAN 18 18 16 18 55 19 22 21 21 05 43 06 09 06 49 02 54 07 33 13 17 10.3 8.4 80 2251-0249 >90 TUE JAN 19 18 16 18 56 19 23 22 09 05 43 06 09 06 49 02 59 07 37 13 21 10.3 7.6 73 2333 0219 >90 WED JAN 20 18 17 18 57 19 23 22 58 05 43 06 09 06 49 03 03 07 41 13 25 10.3 6.7 65 0017 0728 >90 THU JAN 21 18 18 18 57 19 24 23 50 05 43 06 09 06 49 03 08 07 45 13 29 10.3 5.9 57 0103 1226 >90 FRI JAN 22 18 18 18 58 19 24 00 44 05 43 06 09 06 49 03 12 07 49 13 33 10.3 5.0 48 0152 1658 84 SAT JAN 23 18 19 18 58 19 25 01 41 05 43 06 09 06 49 03 17 07 53 13 36 10.3 4.0 39 0244 2057 72 SUN JAN 24 18 19 18 59 19 25 02 42 05 43 06 09 06 49 03 21 07 56 13 40 10.3 3.0 29 0341 2355 59 MON JAN 25 18 20 18 59 19 26 03 44 05 43 06 09 06 48 03 26 08 00 13 44 10.3 2.0 19 0442 2534 46 TUE JAN 26 18 21 19 00 19 26 14 30 04 46 05 43 06 09 06 48 03 30 08 04 13 48 10.3 1.0 9 0547 2533 32 WED JAN 27 18 21 19 01 19 27 15 36 05 45 05 42 06 09 06 48 03 35 08 08 13 51 10.2 0.0 0 0653 2342 18 THU JAN 28 18 22 19 01 19 27 16 44 06 39 05 42 06 09 06 48 03 39 08 12 13 55 10.2 0.0 0 0757 2007 04 FRI JAN 29 18 22 19 02 19 28 17 53 05 42 06 08 06 48 03 43 08 16 13 59 10.2 0.0 0 0859 1505 11 SAT JAN 30 18 23 19 02 19 28 18 59 05 42 06 08 06 47 03 47 08 20 14 03 10.2 0.0 0 0957 0904 26 SUN JAN 31 18 24 19 03 19 29 20 03 05 42 06 08 06 47 03 52 08 24 14 07 10.2 0.6 5 1053 0235 40 ONE LINE REFERS TO EVENING DATE LAST QUARTER Jan 07 10:40 UT AND FOLLOWING MORNING. NEW MOON Jan 15 07:10 UT All dates and times are zone HST FIRST QUARTER Jan 23 10:55 UT in upper table (except sid time). FULL MOON Jan 30 06:16 UT