KECK OBSERVATORY CALENDAR FOR 2006 -ASTRONOMICAL (computed for altitude 4145.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) RA DEC 2006 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight FRI DEC 01 17 52 18 32 18 59 04 30 05 23 05 50 06 30 23 21 04 23 09 46 10.4 0.9 8 0211+1657 SAT DEC 02 17 52 18 33 18 59 05 36 05 23 05 50 06 30 23 25 04 26 09 50 10.4 0.0 0 0308+2207 SUN DEC 03 17 53 18 33 19 00 16 28 06 43 05 24 05 51 06 31 23 30 04 30 09 55 10.4 0.0 0 0409+2554 MON DEC 04 17 53 18 33 19 00 17 23 07 48 05 24 05 51 06 32 23 34 04 34 09 59 10.4 0.0 0 0512+2800 TUE DEC 05 17 53 18 33 19 00 18 23 05 25 05 52 06 32 23 37 04 38 10 04 10.4 0.0 0 0615+2817 WED DEC 06 17 53 18 33 19 00 19 25 05 25 05 52 06 33 23 41 04 42 10 08 10.4 0.4 3 0715+2650 THU DEC 07 17 53 18 34 19 01 20 26 05 26 05 53 06 33 23 46 04 46 10 13 10.4 1.4 13 0812+2356 FRI DEC 08 17 54 18 34 19 01 21 24 05 27 05 54 06 34 23 50 04 50 10 18 10.4 2.4 22 0904+1957 SAT DEC 09 17 54 18 34 19 01 22 19 05 27 05 54 06 35 23 54 04 54 10 22 10.4 3.3 31 0952+1511 SUN DEC 10 17 54 18 35 19 02 23 10 05 28 05 55 06 35 23 59 04 58 10 27 10.4 4.1 39 1037+0956 MON DEC 11 17 55 18 35 19 02 23 59 05 28 05 55 06 36 00 03 05 02 10 31 10.4 5.0 47 1120+0425 TUE DEC 12 17 55 18 35 19 02 00 46 05 29 05 56 06 36 00 07 05 06 10 36 10.5 5.7 54 1202-0111 WED DEC 13 17 55 18 36 19 03 01 34 05 29 05 56 06 37 00 12 05 10 10 40 10.4 6.5 62 1243-0646 THU DEC 14 17 56 18 36 19 03 02 22 05 30 05 57 06 38 00 16 05 14 10 45 10.5 7.3 70 1327-1209 FRI DEC 15 17 56 18 37 19 04 03 13 05 30 05 58 06 38 00 21 05 18 10 49 10.4 8.1 78 1412-1709 SAT DEC 16 17 56 18 37 19 04 04 06 05 31 05 58 06 39 00 25 05 22 10 54 10.4 9.0 86 1500-2133 SUN DEC 17 17 57 18 37 19 05 05 03 05 31 05 59 06 39 00 30 05 26 10 58 10.4 10.0 95 1553-2505 MON DEC 18 17 57 18 38 19 05 06 02 16 28 05 32 05 59 06 40 00 34 05 30 11 02 10.4 10.4 100 1649-2727 TUE DEC 19 17 58 18 38 19 05 07 01 17 21 05 33 06 00 06 40 00 38 05 34 11 07 10.5 10.5 100 1748-2821 WED DEC 20 17 58 18 39 19 06 07 57 18 20 05 33 06 00 06 41 00 43 05 37 11 11 10.4 10.4 100 1848-2738 THU DEC 21 17 59 18 39 19 06 19 22 05 34 06 01 06 41 00 47 05 41 11 16 10.5 10.2 97 1948-2517 FRI DEC 22 17 59 18 40 19 07 20 24 05 34 06 01 06 42 00 52 05 45 11 20 10.4 9.2 87 2045-2125 SAT DEC 23 18 00 18 40 19 07 21 26 05 35 06 02 06 42 00 55 05 49 11 25 10.5 8.2 77 2140-1621 SUN DEC 24 18 00 18 41 19 08 22 26 05 35 06 02 06 43 01 00 05 53 11 29 10.5 7.2 68 2232-1023 MON DEC 25 18 01 18 41 19 08 23 24 05 35 06 03 06 43 01 04 05 57 11 33 10.5 6.2 59 2323-0353 TUE DEC 26 18 01 18 42 19 09 00 21 05 36 06 03 06 44 01 09 06 01 11 38 10.5 5.2 50 0012+0248 WED DEC 27 18 02 18 42 19 10 01 20 05 36 06 04 06 44 01 14 06 05 11 42 10.4 4.3 40 0103+0923 THU DEC 28 18 02 18 43 19 10 02 20 05 37 06 04 06 44 01 18 06 09 11 47 10.5 3.3 31 0155+1530 FRI DEC 29 18 03 18 43 19 11 03 23 05 37 06 04 06 45 01 23 06 13 11 51 10.4 2.2 21 0250+2047 SAT DEC 30 18 04 18 44 19 11 04 27 05 38 06 05 06 45 01 27 06 17 11 56 10.5 1.2 11 0348+2454 SUN DEC 31 18 04 18 45 19 12 05 32 05 38 06 05 06 46 01 32 06 21 12 00 10.4 0.1 0 0449+2729 ONE LINE REFERS TO EVENING DATE FULL MOON DEC 05 00:28 UT AND FOLLOWING MORNING. LAST QUARTER DEC 12 14:35 UT All dates and times are zone HST NEW MOON DEC 20 14:03 UT in upper table (except sid time). FIRST QUARTER DEC 27 14:50 UT