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 OCT 01 18 21 18 58 19 24 00 47 05 00 05 25 06 03 19 45 00 22 05 23 9.6 5.4 56 0750 1911 >90 SAT OCT 02 18 20 18 57 19 23 01 50 14 32 05 00 05 26 06 03 19 48 00 26 05 27 9.6 6.5 67 0847 1455 >90 SUN OCT 03 18 19 18 57 19 22 02 52 15 18 05 00 05 26 06 03 19 51 00 30 05 31 9.6 7.5 77 0942 0942 >90 MON OCT 04 18 18 18 56 19 21 03 55 16 02 05 00 05 26 06 04 19 54 00 34 05 35 9.6 8.6 88 1036 0351 >90 TUE OCT 05 18 17 18 55 19 20 04 57 16 45 05 01 05 26 06 04 19 57 00 38 05 40 9.7 9.6 99 1130-0217 >90 WED OCT 06 18 16 18 54 19 19 06 00 17 28 05 01 05 26 06 04 20 00 00 42 05 44 9.7 9.7 100 1225-0818 >90 THU OCT 07 18 16 18 53 19 19 18 14 05 01 05 27 06 04 20 04 00 46 05 48 9.7 9.7 100 1321-1348 >90 FRI OCT 08 18 15 18 52 19 18 19 01 05 01 05 27 06 05 20 07 00 50 05 52 9.7 9.7 100 1418-1826 >90 SAT OCT 09 18 14 18 52 19 17 19 53 05 02 05 27 06 05 20 10 00 54 05 57 9.8 9.2 93 1516-2152 >90 SUN OCT 10 18 13 18 51 19 16 20 46 05 02 05 27 06 05 20 13 00 58 06 00 9.8 8.3 84 1615-2356 >90 MON OCT 11 18 12 18 50 19 15 21 42 05 02 05 28 06 05 20 16 01 02 06 04 9.8 7.3 74 1713-2434 >90 TUE OCT 12 18 12 18 49 19 15 22 38 05 02 05 28 06 06 20 20 01 06 06 08 9.8 6.4 65 1809-2352 >90 WED OCT 13 18 11 18 48 19 14 23 34 05 03 05 28 06 06 20 23 01 09 06 13 9.8 5.5 55 1903-2158 >90 THU OCT 14 18 10 18 48 19 13 00 27 05 03 05 29 06 06 20 26 01 13 06 17 9.8 4.6 46 1955-1901 87 FRI OCT 15 18 09 18 47 19 12 01 18 05 03 05 29 06 07 20 29 01 17 06 21 9.8 3.8 38 2043-1527 76 SAT OCT 16 18 08 18 46 19 12 14 01 02 08 05 04 05 29 06 07 20 32 01 21 06 26 9.9 2.9 29 2128-1117 65 SUN OCT 17 18 08 18 46 19 11 14 36 02 56 05 04 05 29 06 07 20 35 01 25 06 30 9.9 2.1 21 2213-0639 54 MON OCT 18 18 07 18 45 19 10 15 10 03 44 05 04 05 30 06 08 20 38 01 29 06 34 9.9 1.3 13 2257-0146 43 TUE OCT 19 18 06 18 44 19 10 15 43 04 32 05 04 05 30 06 08 20 42 01 33 06 38 9.9 0.5 5 2340 0313 32 WED OCT 20 18 06 18 43 19 09 16 16 05 21 05 05 05 30 06 08 20 45 01 37 06 43 9.9 0.0 0 0025 0807 21 THU OCT 21 18 05 18 43 19 08 16 51 06 12 05 05 05 31 06 09 20 48 01 41 06 47 10.0 0.0 0 0112 1245 10 FRI OCT 22 18 04 18 42 19 08 17 29 05 05 05 31 06 09 20 52 01 45 06 51 10.0 0.0 0 0200 1654 05 SAT OCT 23 18 04 18 42 19 07 18 10 05 06 05 31 06 09 20 55 01 49 06 56 10.0 0.0 0 0252 2020 15 SUN OCT 24 18 03 18 41 19 07 18 56 05 06 05 32 06 10 20 59 01 53 07 00 10.0 0.0 0 0346 2249 27 MON OCT 25 18 02 18 40 19 06 19 47 05 06 05 32 06 10 21 02 01 57 07 04 10.0 0.7 6 0443 2408 39 TUE OCT 26 18 02 18 40 19 06 20 41 05 07 05 32 06 10 21 06 02 01 07 09 10.0 1.6 15 0541 2406 51 WED OCT 27 18 01 18 39 19 05 21 40 05 07 05 33 06 11 21 09 02 05 07 12 10.0 2.6 25 0639 2241 63 THU OCT 28 18 00 18 39 19 05 22 40 05 07 05 33 06 11 21 13 02 09 07 16 10.0 3.6 35 0736 1956 76 FRI OCT 29 18 00 18 38 19 04 23 41 05 08 05 33 06 12 21 16 02 13 07 21 10.1 4.6 45 0830 1554 89 SAT OCT 30 17 59 18 38 19 04 00 41 05 08 05 34 06 12 21 20 02 16 07 25 10.1 5.6 55 0926 1112 >90 SUN OCT 31 17 59 18 37 19 03 01 41 05 08 05 34 06 13 21 23 02 20 07 29 10.1 6.6 65 1019 0542 >90 ONE LINE REFERS TO EVENING DATE LAST QUARTER Oct 01 03:53 UT AND FOLLOWING MORNING. NEW MOON Oct 07 18:45 UT All dates and times are zone HST FIRST QUARTER Oct 14 21:27 UT in upper table (except sid time). FULL MOON Oct 23 01:37 UT LAST QUARTER Oct 30 12:46 UT