YALO OBSERVATORY CALENDAR FOR 1999 (computed for altitude 2210.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON DATE(CST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) RA DEC 1999 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight THU APR 01 18 49 19 33 20 00 19 56 05 34 06 02 06 46 07 56 11 57 17 32 9.6 0.0 0 1419-0844 FRI APR 02 18 48 19 31 19 59 20 30 05 35 06 03 06 47 07 59 12 01 17 37 9.6 0.5 5 1506-1211 SAT APR 03 18 47 19 30 19 58 21 07 05 36 06 03 06 47 08 02 12 05 17 42 9.6 1.1 11 1553-1507 SUN APR 04 18 45 19 29 19 57 21 47 05 36 06 04 06 48 08 05 12 09 17 46 9.6 1.8 18 1641-1725 MON APR 05 18 44 19 28 19 56 22 30 05 37 06 05 06 48 08 08 12 13 17 51 9.7 2.6 26 1731-1859 TUE APR 06 18 43 19 27 19 55 23 16 05 37 06 05 06 49 08 11 12 17 17 55 9.7 3.4 34 1822-1943 WED APR 07 18 42 19 26 19 53 00 07 05 38 06 06 06 50 08 13 12 21 18 00 9.8 4.2 43 1913-1933 THU APR 08 18 41 19 25 19 52 01 01 05 39 06 06 06 50 08 16 12 25 18 05 9.8 5.1 52 2006-1826 FRI APR 09 18 40 19 23 19 51 01 58 05 39 06 07 06 51 08 19 12 29 18 08 9.8 6.1 62 2059-1623 SAT APR 10 18 38 19 22 19 50 02 59 05 40 06 07 06 51 08 22 12 32 18 13 9.8 7.1 72 2152-1324 SUN APR 11 18 37 19 21 19 49 04 01 16 35 05 40 06 08 06 52 08 25 12 36 18 17 9.8 8.2 83 2246-0937 MON APR 12 18 36 19 20 19 48 05 06 17 16 05 41 06 09 06 53 08 28 12 40 18 22 9.9 9.3 94 2340-0509 TUE APR 13 18 35 19 19 19 47 06 12 17 57 05 41 06 09 06 53 08 31 12 44 18 26 9.9 9.9 100 0035-0015 WED APR 14 18 34 19 18 19 46 07 19 18 39 05 42 06 10 06 54 08 34 12 48 18 31 9.9 9.9 100 0131+0445 THU APR 15 18 33 19 17 19 45 19 22 05 42 06 10 06 54 08 36 12 52 18 35 9.9 9.9 100 0229+0932 FRI APR 16 18 32 19 16 19 44 20 09 05 43 06 11 06 55 08 39 12 56 18 40 10.0 9.6 95 0328+1343 SAT APR 17 18 31 19 15 19 43 20 59 05 44 06 11 06 56 08 42 13 00 18 45 10.0 8.8 87 0429+1658 SUN APR 18 18 30 19 14 19 42 21 54 05 44 06 12 06 56 08 45 13 04 18 49 10.0 7.8 78 0530+1903 MON APR 19 18 29 19 13 19 41 22 51 05 45 06 13 06 57 08 48 13 08 18 54 10.1 6.9 68 0631+1951 TUE APR 20 18 28 19 12 19 40 23 50 05 45 06 13 06 57 08 51 13 12 18 58 10.1 5.9 58 0731+1924 WED APR 21 18 27 19 11 19 39 00 50 05 46 06 14 06 58 08 54 13 16 19 03 10.1 4.9 48 0828+1748 THU APR 22 18 26 19 10 19 38 01 48 05 46 06 14 06 59 08 57 13 20 19 07 10.1 4.0 39 0922+1518 FRI APR 23 18 25 19 09 19 37 02 46 05 47 06 15 06 59 09 00 13 24 19 12 10.2 3.0 29 1013+1205 SAT APR 24 18 24 19 08 19 36 03 41 05 47 06 15 07 00 09 03 13 28 19 16 10.2 2.1 20 1102+0822 SUN APR 25 18 23 19 07 19 35 16 17 04 36 05 48 06 16 07 00 09 06 13 32 19 21 10.2 1.2 11 1150+0421 MON APR 26 18 22 19 06 19 34 16 51 05 29 05 48 06 16 07 01 09 09 13 36 19 25 10.2 0.3 3 1236+0013 TUE APR 27 18 21 19 05 19 33 17 23 06 22 05 49 06 17 07 02 09 12 13 40 19 29 10.3 0.0 0 1321-0352 WED APR 28 18 20 19 04 19 32 17 56 07 15 05 49 06 18 07 02 09 15 13 43 19 33 10.3 0.0 0 1407-0747 THU APR 29 18 19 19 04 19 32 18 30 05 50 06 18 07 03 09 19 13 47 19 38 10.3 0.0 0 1453-1122 FRI APR 30 18 18 19 03 19 31 19 06 05 51 06 19 07 03 09 22 13 51 19 43 10.3 0.0 0 1540-1429 ONE LINE REFERS TO EVENING DATE LAST QUARTER APR 09 02:54 UT AND FOLLOWING MORNING. NEW MOON APR 16 04:23 UT All dates and times are zone CST FIRST QUARTER APR 22 19:04 UT in upper table (except sid time). FULL MOON APR 30 14:57 UT