YALO OBSERVATORY CALENDAR FOR 2001 (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 2001 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 18 18 h h % midnight SUN APR 01 18 49 19 33 20 00 01 59 05 34 06 02 06 46 07 58 11 59 17 34 9.6 3.6 37 0825+2115 MON APR 02 18 48 19 31 19 59 03 06 05 35 06 03 06 47 08 01 12 03 17 39 9.6 2.5 25 0925+1820 TUE APR 03 18 47 19 30 19 58 16 39 04 14 05 36 06 03 06 47 08 04 12 07 17 44 9.6 1.4 14 1024+1415 WED APR 04 18 45 19 29 19 57 17 21 05 21 05 36 06 04 06 48 08 07 12 11 17 48 9.6 0.2 2 1120+0917 THU APR 05 18 44 19 28 19 56 18 00 06 27 05 37 06 05 06 48 08 10 12 15 17 53 9.7 0.0 0 1214+0348 FRI APR 06 18 43 19 27 19 55 18 37 07 31 05 37 06 05 06 49 08 13 12 19 17 57 9.7 0.0 0 1307-0149 SAT APR 07 18 42 19 26 19 53 19 13 05 38 06 06 06 50 08 15 12 23 18 02 9.8 0.0 0 1400-0716 SUN APR 08 18 41 19 25 19 52 19 51 05 39 06 06 06 50 08 18 12 27 18 07 9.8 0.0 0 1452-1213 MON APR 09 18 40 19 23 19 51 20 30 05 39 06 07 06 51 08 21 12 31 18 10 9.8 0.6 6 1545-1625 TUE APR 10 18 38 19 22 19 50 21 11 05 40 06 07 06 51 08 24 12 35 18 15 9.8 1.3 13 1638-1941 WED APR 11 18 37 19 21 19 49 21 56 05 40 06 08 06 52 08 27 12 38 18 19 9.8 2.1 21 1732-2154 THU APR 12 18 36 19 20 19 48 22 44 05 41 06 09 06 53 08 30 12 42 18 24 9.9 2.9 29 1825-2259 FRI APR 13 18 35 19 19 19 47 23 35 05 41 06 09 06 53 08 33 12 46 18 28 9.9 3.8 38 1918-2258 SAT APR 14 18 34 19 18 19 46 00 28 05 42 06 10 06 54 08 36 12 50 18 33 9.9 4.7 47 2009-2153 SUN APR 15 18 33 19 17 19 45 01 22 05 42 06 10 06 54 08 39 12 54 18 37 9.9 5.6 56 2059-1951 MON APR 16 18 32 19 16 19 44 02 16 05 43 06 11 06 55 08 41 12 58 18 42 10.0 6.5 65 2148-1659 TUE APR 17 18 31 19 15 19 43 03 10 16 09 05 44 06 11 06 56 08 44 13 02 18 47 10.0 7.4 74 2235-1324 WED APR 18 18 30 19 14 19 42 04 05 16 42 05 44 06 12 06 56 08 47 13 06 18 51 10.0 8.4 83 2321-0914 THU APR 19 18 29 19 13 19 41 05 00 17 13 05 45 06 13 06 57 08 50 13 10 18 56 10.1 9.3 92 0007-0438 FRI APR 20 18 28 19 12 19 40 05 56 17 45 05 45 06 13 06 57 08 53 13 14 19 00 10.1 10.1 100 0053+0014 SAT APR 21 18 27 19 11 19 39 06 54 18 17 05 46 06 14 06 58 08 56 13 18 19 05 10.1 10.1 100 0140+0513 SUN APR 22 18 26 19 10 19 38 07 53 18 51 05 46 06 14 06 59 08 59 13 22 19 09 10.1 10.1 100 0229+1005 MON APR 23 18 25 19 09 19 37 19 28 05 47 06 15 06 59 09 02 13 26 19 14 10.2 10.2 100 0320+1434 TUE APR 24 18 24 19 08 19 36 20 09 05 47 06 15 07 00 09 05 13 30 19 18 10.2 9.6 94 0414+1823 WED APR 25 18 23 19 07 19 35 20 56 05 48 06 16 07 00 09 08 13 34 19 23 10.2 8.9 86 0511+2116 THU APR 26 18 22 19 06 19 34 21 49 05 48 06 16 07 01 09 11 13 38 19 27 10.2 8.0 78 0610+2255 FRI APR 27 18 21 19 05 19 33 22 48 05 49 06 17 07 02 09 14 13 42 19 31 10.3 7.0 68 0711+2310 SAT APR 28 18 20 19 04 19 32 23 51 05 49 06 18 07 02 09 17 13 45 19 35 10.3 6.0 58 0811+2158 SUN APR 29 18 19 19 04 19 32 00 57 05 50 06 18 07 03 09 21 13 49 19 40 10.3 4.9 47 0911+1923 MON APR 30 18 18 19 03 19 31 02 03 05 51 06 19 07 03 09 24 13 53 19 45 10.3 3.8 36 1008+1538 ONE LINE REFERS TO EVENING DATE FIRST QUARTER APR 01 10:52 UT AND FOLLOWING MORNING. FULL MOON APR 08 03:26 UT All dates and times are zone CST LAST QUARTER APR 15 15:35 UT in upper table (except sid time). NEW MOON APR 23 15:30 UT FIRST QUARTER APR 30 17:10 UT