KECK OBSERVATORY CALENDAR FOR 2001 -NAUTICAL (computed for altitude 4145.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) RA DEC 2001 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight SAT DEC 01 17 52 18 32 18 59 18 37 05 23 05 50 06 30 22 54 04 23 10 14 11.3 0.1 0 0603+2346 SUN DEC 02 17 52 18 33 18 59 19 34 05 23 05 50 06 30 22 59 04 27 10 18 11.3 1.0 9 0704+2412 MON DEC 03 17 53 18 33 19 00 20 35 05 24 05 51 06 31 23 03 04 31 10 23 11.3 2.0 17 0805+2307 TUE DEC 04 17 53 18 33 19 00 21 38 05 24 05 51 06 32 23 07 04 35 10 27 11.3 3.1 27 0905+2035 WED DEC 05 17 53 18 33 19 00 22 41 05 25 05 52 06 32 23 11 04 39 10 32 11.3 4.1 36 1003+1648 THU DEC 06 17 53 18 33 19 00 23 42 05 25 05 52 06 33 23 15 04 43 10 36 11.3 5.2 45 1058+1204 FRI DEC 07 17 53 18 34 19 01 00 42 05 26 05 53 06 33 23 20 04 47 10 41 11.3 6.1 54 1151+0642 SAT DEC 08 17 54 18 34 19 01 01 41 05 27 05 54 06 34 23 24 04 51 10 46 11.3 7.1 62 1242+0100 SUN DEC 09 17 54 18 34 19 01 02 38 05 27 05 54 06 35 23 28 04 55 10 50 11.3 8.1 71 1333-0443 MON DEC 10 17 54 18 35 19 02 03 36 05 28 05 55 06 35 23 33 04 59 10 55 11.3 9.0 79 1425-1010 TUE DEC 11 17 55 18 35 19 02 04 34 05 28 05 55 06 36 23 37 05 03 10 59 11.3 10.0 88 1518-1503 WED DEC 12 17 55 18 35 19 02 05 33 16 30 05 29 05 56 06 36 23 41 05 07 11 04 11.3 11.0 96 1612-1906 THU DEC 13 17 55 18 36 19 03 06 32 17 17 05 29 05 56 06 37 23 46 05 11 11 08 11.3 11.3 100 1708-2204 FRI DEC 14 17 56 18 36 19 03 07 29 18 08 05 30 05 57 06 38 23 50 05 15 11 13 11.3 11.3 100 1805-2348 SAT DEC 15 17 56 18 37 19 04 19 01 05 30 05 58 06 38 23 55 05 19 11 18 11.3 11.0 96 1901-2413 SUN DEC 16 17 56 18 37 19 04 19 55 05 31 05 58 06 39 23 59 05 23 11 22 11.3 10.1 88 1956-2324 MON DEC 17 17 57 18 37 19 05 20 49 05 31 05 59 06 39 00 03 05 26 11 26 11.4 9.2 80 2049-2126 TUE DEC 18 17 57 18 38 19 05 21 42 05 32 05 59 06 40 00 08 05 30 11 30 11.4 8.3 72 2139-1833 WED DEC 19 17 58 18 38 19 05 22 33 05 33 06 00 06 40 00 11 05 34 11 35 11.4 7.5 65 2226-1456 THU DEC 20 17 58 18 39 19 06 23 23 05 33 06 00 06 41 00 16 05 38 11 39 11.4 6.6 58 2312-1045 FRI DEC 21 17 59 18 39 19 06 00 11 05 34 06 01 06 41 00 20 05 42 11 44 11.4 5.8 51 2356-0610 SAT DEC 22 17 59 18 40 19 07 00 59 05 34 06 01 06 42 00 25 05 46 11 48 11.4 5.0 44 0039-0121 SUN DEC 23 18 00 18 40 19 07 01 48 05 35 06 02 06 42 00 29 05 50 11 53 11.4 4.2 37 0123+0334 MON DEC 24 18 00 18 41 19 08 02 38 05 35 06 02 06 43 00 34 05 54 11 57 11.4 3.4 29 0208+0827 TUE DEC 25 18 01 18 41 19 08 03 31 05 35 06 03 06 43 00 38 05 58 12 02 11.4 2.5 22 0256+1308 WED DEC 26 18 01 18 42 19 09 04 27 05 36 06 03 06 44 00 43 06 02 12 06 11.3 1.6 14 0347+1721 THU DEC 27 18 02 18 42 19 10 05 27 05 36 06 04 06 44 00 47 06 06 12 11 11.4 0.6 5 0442+2049 FRI DEC 28 18 02 18 43 19 10 16 24 06 28 05 37 06 04 06 44 00 52 06 10 12 15 11.3 0.0 0 0540+2312 SAT DEC 29 18 03 18 43 19 11 17 20 07 30 05 37 06 04 06 45 00 56 06 14 12 19 11.3 0.0 0 0642+2412 SUN DEC 30 18 04 18 44 19 11 18 21 05 38 06 05 06 45 01 01 06 18 12 24 11.3 0.0 0 0744+2339 MON DEC 31 18 04 18 45 19 12 19 26 05 38 06 05 06 46 01 06 06 22 12 28 11.3 0.7 6 0847+2130 ONE LINE REFERS TO EVENING DATE LAST QUARTER DEC 07 19:55 UT AND FOLLOWING MORNING. NEW MOON DEC 14 20:50 UT All dates and times are zone HST FIRST QUARTER DEC 22 21:00 UT in upper table (except sid time). FULL MOON DEC 30 10:43 UT