KECK OBSERVATORY CALENDAR FOR 2000 -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 2000 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight FRI DEC 01 17 52 18 33 18 59 22 58 05 23 05 50 06 30 22 56 04 24 10 15 11.3 6.9 60 2143-1659 SAT DEC 02 17 53 18 33 19 00 23 48 05 24 05 51 06 31 23 00 04 28 10 20 11.3 6.1 53 2230-1334 SUN DEC 03 17 53 18 33 19 00 00 38 05 24 05 51 06 32 23 04 04 32 10 24 11.3 5.2 46 2317-0933 MON DEC 04 17 53 18 33 19 00 01 29 05 25 05 52 06 32 23 08 04 36 10 29 11.3 4.4 38 0003-0503 TUE DEC 05 17 53 18 33 19 00 02 20 05 25 05 52 06 33 23 12 04 40 10 33 11.3 3.5 31 0050-0014 WED DEC 06 17 53 18 34 19 01 03 14 05 26 05 53 06 33 23 17 04 44 10 38 11.3 2.6 23 0139+0445 THU DEC 07 17 54 18 34 19 01 04 11 05 27 05 54 06 34 23 21 04 48 10 43 11.3 1.7 15 0229+0941 FRI DEC 08 17 54 18 34 19 01 05 11 05 27 05 54 06 35 23 25 04 52 10 47 11.3 0.7 6 0324+1416 SAT DEC 09 17 54 18 35 19 02 16 30 06 14 05 28 05 55 06 35 23 30 04 56 10 52 11.3 0.0 0 0421+1810 SUN DEC 10 17 55 18 35 19 02 17 22 07 19 05 28 05 55 06 36 23 34 05 00 10 56 11.3 0.0 0 0523+2059 MON DEC 11 17 55 18 35 19 02 18 20 05 29 05 56 06 36 23 38 05 04 11 01 11.3 0.0 0 0627+2225 TUE DEC 12 17 55 18 36 19 03 19 23 05 29 05 56 06 37 23 43 05 08 11 05 11.3 0.8 6 0732+2215 WED DEC 13 17 56 18 36 19 03 20 29 05 30 05 57 06 38 23 47 05 12 11 10 11.3 1.9 16 0835+2031 THU DEC 14 17 56 18 37 19 04 21 34 05 30 05 58 06 38 23 52 05 16 11 15 11.3 3.0 25 0936+1727 FRI DEC 15 17 56 18 37 19 04 22 37 05 31 05 58 06 39 23 56 05 20 11 19 11.3 4.0 35 1033+1323 SAT DEC 16 17 57 18 37 19 05 23 36 05 31 05 59 06 39 00 00 05 23 11 23 11.4 5.0 43 1127+0839 SUN DEC 17 17 57 18 38 19 05 00 33 05 32 05 59 06 40 00 05 05 27 11 27 11.4 5.9 52 1218+0336 MON DEC 18 17 58 18 38 19 05 01 28 05 33 06 00 06 40 00 08 05 31 11 32 11.4 6.8 60 1307-0130 TUE DEC 19 17 58 18 39 19 06 02 22 05 33 06 00 06 41 00 13 05 35 11 36 11.4 7.7 67 1356-0626 WED DEC 20 17 59 18 39 19 06 03 15 05 34 06 01 06 41 00 17 05 39 11 41 11.4 8.6 75 1444-1100 THU DEC 21 17 59 18 40 19 07 04 08 05 34 06 01 06 42 00 22 05 43 11 45 11.4 9.5 83 1533-1500 FRI DEC 22 18 00 18 40 19 07 05 01 16 02 05 35 06 02 06 42 00 26 05 47 11 50 11.4 10.4 91 1624-1816 SAT DEC 23 18 00 18 41 19 08 05 53 16 46 05 35 06 02 06 43 00 31 05 51 11 54 11.4 11.2 98 1715-2041 SUN DEC 24 18 01 18 41 19 08 06 45 17 32 05 35 06 03 06 43 00 35 05 55 11 59 11.4 11.4 100 1806-2208 MON DEC 25 18 01 18 42 19 09 07 35 18 21 05 36 06 03 06 44 00 40 05 59 12 03 11.3 11.3 100 1858-2234 TUE DEC 26 18 02 18 42 19 10 19 10 05 36 06 04 06 44 00 44 06 03 12 08 11.4 10.9 95 1949-2158 WED DEC 27 18 02 18 43 19 10 20 01 05 37 06 04 06 44 00 49 06 07 12 12 11.3 10.1 88 2040-2023 THU DEC 28 18 03 18 43 19 11 20 52 05 37 06 04 06 45 00 53 06 11 12 16 11.3 9.2 81 2129-1756 FRI DEC 29 18 04 18 44 19 11 21 42 05 38 06 05 06 45 00 58 06 15 12 21 11.3 8.4 73 2216-1444 SAT DEC 30 18 04 18 45 19 12 22 31 05 38 06 05 06 46 01 03 06 19 12 25 11.3 7.6 66 2303-1055 SUN DEC 31 18 05 18 45 19 12 23 21 05 38 06 06 06 46 01 07 06 23 12 30 11.3 6.7 59 2348-0638 ONE LINE REFERS TO EVENING DATE FIRST QUARTER DEC 04 03:59 UT AND FOLLOWING MORNING. FULL MOON DEC 11 09:07 UT All dates and times are zone HST LAST QUARTER DEC 18 00:45 UT in upper table (except sid time). NEW MOON DEC 25 17:23 UT