KECK OBSERVATORY CALENDAR FOR 2000 -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 2000 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight FRI DEC 01 17 52 18 33 18 59 22 58 05 23 05 50 06 30 23 23 04 24 09 48 10.4 6.4 61 2143-1659 SAT DEC 02 17 53 18 33 19 00 23 48 05 24 05 51 06 31 23 27 04 28 09 53 10.4 5.6 53 2230-1334 SUN DEC 03 17 53 18 33 19 00 00 38 05 24 05 51 06 32 23 31 04 32 09 57 10.4 4.8 45 2317-0933 MON DEC 04 17 53 18 33 19 00 01 29 05 25 05 52 06 32 23 35 04 36 10 02 10.4 3.9 37 0003-0503 TUE DEC 05 17 53 18 33 19 00 02 20 05 25 05 52 06 33 23 39 04 40 10 06 10.4 3.1 29 0050-0014 WED DEC 06 17 53 18 34 19 01 03 14 05 26 05 53 06 33 23 44 04 44 10 11 10.4 2.2 21 0139+0445 THU DEC 07 17 54 18 34 19 01 04 11 05 27 05 54 06 34 23 48 04 48 10 16 10.4 1.3 12 0229+0941 FRI DEC 08 17 54 18 34 19 01 05 11 05 27 05 54 06 35 23 52 04 52 10 20 10.4 0.3 2 0324+1416 SAT DEC 09 17 54 18 35 19 02 16 30 06 14 05 28 05 55 06 35 23 57 04 56 10 25 10.4 0.0 0 0421+1810 SUN DEC 10 17 55 18 35 19 02 17 22 07 19 05 28 05 55 06 36 00 01 05 00 10 29 10.4 0.0 0 0523+2059 MON DEC 11 17 55 18 35 19 02 18 20 05 29 05 56 06 36 00 05 05 04 10 34 10.5 0.0 0 0627+2225 TUE DEC 12 17 55 18 36 19 03 19 23 05 29 05 56 06 37 00 10 05 08 10 38 10.4 0.3 3 0732+2215 WED DEC 13 17 56 18 36 19 03 20 29 05 30 05 57 06 38 00 14 05 12 10 43 10.5 1.4 13 0835+2031 THU DEC 14 17 56 18 37 19 04 21 34 05 30 05 58 06 38 00 19 05 16 10 46 10.4 2.5 23 0936+1727 FRI DEC 15 17 56 18 37 19 04 22 37 05 31 05 58 06 39 00 23 05 20 10 51 10.4 3.5 33 1033+1323 SAT DEC 16 17 57 18 37 19 05 23 36 05 31 05 59 06 39 00 28 05 23 10 55 10.4 4.5 43 1127+0839 SUN DEC 17 17 57 18 38 19 05 00 33 05 32 05 59 06 40 00 32 05 27 11 00 10.4 5.5 52 1218+0336 MON DEC 18 17 58 18 38 19 05 01 28 05 33 06 00 06 40 00 36 05 31 11 05 10.5 6.4 60 1307-0130 TUE DEC 19 17 58 18 39 19 06 02 22 05 33 06 00 06 41 00 40 05 35 11 09 10.4 7.3 69 1356-0626 WED DEC 20 17 59 18 39 19 06 03 15 05 34 06 01 06 41 00 44 05 39 11 14 10.5 8.1 77 1444-1100 THU DEC 21 17 59 18 40 19 07 04 08 05 34 06 01 06 42 00 49 05 43 11 18 10.4 9.0 86 1533-1500 FRI DEC 22 18 00 18 40 19 07 05 01 16 02 05 35 06 02 06 42 00 53 05 47 11 23 10.5 9.9 94 1624-1816 SAT DEC 23 18 00 18 41 19 08 05 53 16 46 05 35 06 02 06 43 00 58 05 51 11 27 10.5 10.5 100 1715-2041 SUN DEC 24 18 01 18 41 19 08 06 45 17 32 05 35 06 03 06 43 01 02 05 55 11 31 10.5 10.5 100 1806-2208 MON DEC 25 18 01 18 42 19 09 07 35 18 21 05 36 06 03 06 44 01 07 05 59 11 36 10.5 10.5 100 1858-2234 TUE DEC 26 18 02 18 42 19 10 19 10 05 36 06 04 06 44 01 12 06 03 11 40 10.4 10.4 100 1949-2158 WED DEC 27 18 02 18 43 19 10 20 01 05 37 06 04 06 44 01 16 06 07 11 45 10.5 9.6 91 2040-2023 THU DEC 28 18 03 18 43 19 11 20 52 05 37 06 04 06 45 01 21 06 11 11 49 10.4 8.8 83 2129-1756 FRI DEC 29 18 04 18 44 19 11 21 42 05 38 06 05 06 45 01 25 06 15 11 54 10.5 7.9 75 2216-1444 SAT DEC 30 18 04 18 45 19 12 22 31 05 38 06 05 06 46 01 30 06 19 11 58 10.4 7.1 68 2303-1055 SUN DEC 31 18 05 18 45 19 12 23 21 05 38 06 06 06 46 01 34 06 23 12 02 10.4 6.3 60 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