KECK OBSERVATORY CALENDAR FOR 2040 -ASTRONOMICAL (computed for altitude 4160.0 m) ASTRONOMICAL(18 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (18 deg) Zenith 2040 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 18 18 h h % h m d m deg SUN APR 01 18 46 19 24 19 50 22 52 05 01 05 27 06 05 08 13 12 24 17 25 9.2 3.0 33 1657-2349 80 MON APR 02 18 47 19 24 19 51 23 56 05 00 05 26 06 04 08 18 12 27 17 28 9.1 4.1 44 1753-2520 >90 TUE APR 03 18 47 19 25 19 51 00 58 04 59 05 25 06 03 08 22 12 31 17 31 9.1 5.1 56 1902-2611 >90 WED APR 04 18 47 19 25 19 51 01 57 04 58 05 24 06 02 08 26 12 35 17 34 9.1 6.1 66 2004-2452 >90 THU APR 05 18 47 19 25 19 52 02 50 04 57 05 23 06 01 08 31 12 39 17 37 9.1 7.0 76 2103-2201 >90 FRI APR 06 18 48 19 26 19 52 03 37 14 34 04 56 05 22 06 00 08 35 12 43 17 40 9.1 7.8 85 2200-1756 >90 SAT APR 07 18 48 19 26 19 52 04 20 15 35 04 55 05 21 06 00 08 39 12 47 17 43 9.0 8.5 93 2253-1257 >90 SUN APR 08 18 48 19 26 19 53 05 00 16 33 04 54 05 20 05 59 08 43 12 51 17 46 9.0 9.0 100 2343-0725 >90 MON APR 09 18 48 19 27 19 53 05 37 17 29 04 53 05 20 05 58 08 47 12 55 17 49 9.0 9.0 100 0032-0138 >90 TUE APR 10 18 49 19 27 19 53 06 13 18 24 04 52 05 19 05 57 08 51 12 59 17 52 9.0 9.0 100 0119 0407 >90 WED APR 11 18 49 19 27 19 54 06 50 19 18 04 51 05 18 05 56 08 56 13 03 17 55 9.0 9.0 100 0206 0935 >90 THU APR 12 18 49 19 28 19 54 20 12 04 50 05 17 05 55 09 00 13 07 17 58 8.9 8.6 96 0254 1432 >90 FRI APR 13 18 50 19 28 19 55 21 07 04 50 05 16 05 55 09 05 13 11 18 02 8.9 7.7 86 0343 1846 >90 SAT APR 14 18 50 19 29 19 55 22 02 04 49 05 15 05 54 09 09 13 15 18 05 8.9 6.8 76 0433 2207 >90 SUN APR 15 18 50 19 29 19 56 22 56 04 48 05 14 05 53 09 14 13 19 18 08 8.9 5.9 66 0524 2425 >90 MON APR 16 18 51 19 29 19 56 23 49 04 47 05 14 05 52 09 18 13 23 18 10 8.9 5.0 56 0617 2535 >90 TUE APR 17 18 51 19 30 19 56 00 39 04 46 05 13 05 51 09 22 13 27 18 13 8.8 4.1 46 0710 2531 85 WED APR 18 18 51 19 30 19 57 01 26 04 45 05 12 05 51 09 27 13 31 18 16 8.8 3.3 37 0802 2422 75 THU APR 19 18 52 19 30 19 57 02 10 04 44 05 11 05 50 09 31 13 35 18 19 8.8 2.6 29 0853 2203 65 FRI APR 20 18 52 19 31 19 58 02 50 04 43 05 10 05 49 09 36 13 38 18 22 8.7 1.9 21 0943 1842 55 SAT APR 21 18 52 19 31 19 58 03 28 04 42 05 09 05 49 09 40 13 42 18 25 8.7 1.2 14 1032 1426 46 SUN APR 22 18 53 19 32 19 59 14 52 04 05 04 42 05 09 05 48 09 45 13 46 18 29 8.7 0.6 7 1120 0925 37 MON APR 23 18 53 19 32 19 59 15 45 04 41 04 41 05 08 05 47 09 49 13 50 18 32 8.7 0.0 0 1208 0348 30 TUE APR 24 18 53 19 32 20 00 16 40 05 18 04 40 05 07 05 46 09 54 13 54 18 35 8.7 0.0 0 1257-0211 26 WED APR 25 18 54 19 33 20 00 17 36 05 57 04 39 05 06 05 46 09 58 13 58 18 38 8.7 0.0 0 1347-0814 28 THU APR 26 18 54 19 33 20 01 18 35 06 39 04 38 05 06 05 45 10 02 14 02 18 41 8.6 0.0 0 1441-1402 35 FRI APR 27 18 54 19 34 20 01 19 36 04 37 05 05 05 44 10 06 14 06 18 44 8.6 0.0 0 1537-1910 45 SAT APR 28 18 55 19 34 20 02 20 41 04 37 05 04 05 44 10 11 14 10 18 48 8.6 0.6 7 1638-2313 56 SUN APR 29 18 55 19 35 20 02 21 47 04 36 05 03 05 43 10 15 14 14 18 51 8.6 1.8 20 1741-2547 68 MON APR 30 18 55 19 35 20 03 22 51 04 35 05 03 05 42 10 20 14 18 18 54 8.5 2.8 32 1846-2633 80 ONE LINE REFERS TO EVENING DATE LAST QUARTER Apr 04 14:07 UT AND FOLLOWING MORNING. NEW MOON Apr 11 14:01 UT All dates and times are zone HST FIRST QUARTER Apr 19 13:37 UT in upper table (except sid time). FULL MOON Apr 27 02:38 UT