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 MON JAN 01 18 05 18 45 19 12 00 11 05 39 06 06 06 46 01 11 06 27 12 34 11.3 5.9 52 0034-0200 TUE JAN 02 18 05 18 46 19 13 01 02 05 39 06 06 06 46 01 16 06 31 12 38 11.3 5.1 44 0120+0248 WED JAN 03 18 06 18 47 19 14 01 55 05 39 06 06 06 47 01 21 06 34 12 41 11.3 4.2 36 0209+0739 THU JAN 04 18 07 18 47 19 14 02 52 05 40 06 07 06 47 01 25 06 38 12 46 11.3 3.2 28 0300+1218 FRI JAN 05 18 07 18 48 19 15 03 52 05 40 06 07 06 47 01 29 06 42 12 50 11.3 2.2 19 0355+1629 SAT JAN 06 18 08 18 48 19 15 04 55 05 40 06 07 06 47 01 33 06 46 12 54 11.3 1.2 10 0454+1949 SUN JAN 07 18 09 18 49 19 16 06 01 05 41 06 07 06 48 01 38 06 50 12 58 11.3 0.1 0 0556+2157 MON JAN 08 18 09 18 49 19 16 17 00 07 06 05 41 06 08 06 48 01 42 06 54 13 03 11.3 0.0 0 0702+2233 TUE JAN 09 18 10 18 50 19 17 18 06 05 41 06 08 06 48 01 47 06 58 13 07 11.3 0.0 0 0807+2130 WED JAN 10 18 11 18 51 19 18 19 14 05 41 06 08 06 48 01 52 07 02 13 11 11.3 0.4 3 0911+1853 THU JAN 11 18 11 18 51 19 18 20 20 05 42 06 08 06 48 01 56 07 06 13 15 11.3 1.5 13 1012+1501 FRI JAN 12 18 12 18 52 19 19 21 24 05 42 06 09 06 49 02 01 07 10 13 20 11.3 2.5 22 1109+1018 SAT JAN 13 18 12 18 52 19 19 22 25 05 42 06 09 06 49 02 05 07 14 13 24 11.3 3.5 31 1203+0509 SUN JAN 14 18 13 18 53 19 20 23 22 05 42 06 09 06 49 02 10 07 18 13 28 11.3 4.5 39 1254-0007 MON JAN 15 18 14 18 54 19 20 00 17 05 42 06 09 06 49 02 15 07 22 13 32 11.3 5.4 47 1344-0513 TUE JAN 16 18 14 18 54 19 21 01 11 05 42 06 09 06 49 02 19 07 26 13 36 11.3 6.3 55 1433-0956 WED JAN 17 18 15 18 55 19 22 02 04 05 42 06 09 06 49 02 24 07 30 13 40 11.2 7.2 63 1522-1406 THU JAN 18 18 16 18 55 19 22 02 57 05 43 06 09 06 49 02 28 07 34 13 44 11.2 8.0 71 1612-1734 FRI JAN 19 18 16 18 56 19 23 03 49 05 43 06 09 06 49 02 33 07 38 13 48 11.2 8.9 79 1702-2011 SAT JAN 20 18 17 18 57 19 23 04 41 05 43 06 09 06 49 02 38 07 41 13 51 11.2 9.7 86 1753-2152 SUN JAN 21 18 18 18 57 19 24 05 31 16 17 05 43 06 09 06 49 02 42 07 45 13 55 11.2 10.6 94 1845-2232 MON JAN 22 18 18 18 58 19 24 06 19 17 06 05 43 06 09 06 49 02 47 07 49 13 59 11.2 11.2 100 1936-2212 TUE JAN 23 18 19 18 58 19 25 07 04 17 56 05 43 06 09 06 49 02 50 07 53 14 03 11.2 11.2 100 2027-2052 WED JAN 24 18 19 18 59 19 25 07 47 18 47 05 43 06 09 06 48 02 55 07 57 14 07 11.2 11.2 100 2116-1837 THU JAN 25 18 20 18 59 19 26 19 38 05 43 06 09 06 48 02 59 08 01 14 11 11.2 10.5 94 2204-1536 FRI JAN 26 18 21 19 00 19 26 20 27 05 43 06 09 06 48 03 04 08 05 14 15 11.2 9.7 86 2251-1155 SAT JAN 27 18 21 19 00 19 27 21 17 05 42 06 09 06 48 03 08 08 09 14 19 11.2 8.9 79 2336-0744 SUN JAN 28 18 22 19 01 19 27 22 06 05 42 06 09 06 48 03 13 08 13 14 23 11.1 8.0 72 0021-0313 MON JAN 29 18 22 19 02 19 28 22 56 05 42 06 08 06 48 03 18 08 17 14 26 11.1 7.2 64 0107+0129 TUE JAN 30 18 23 19 02 19 28 23 47 05 42 06 08 06 47 03 22 08 21 14 30 11.1 6.4 57 0154+0614 WED JAN 31 18 24 19 03 19 29 00 41 05 42 06 08 06 47 03 27 08 25 14 34 11.1 5.4 49 0242+1050 ONE LINE REFERS TO EVENING DATE FIRST QUARTER JAN 02 22:36 UT AND FOLLOWING MORNING. FULL MOON JAN 09 20:27 UT All dates and times are zone HST LAST QUARTER JAN 16 12:37 UT in upper table (except sid time). NEW MOON JAN 24 13:09 UT