KECK OBSERVATORY CALENDAR FOR 2018 -NAUTICAL (computed for altitude 4160.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) Zenith 2018 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 12 12 h h % h m d m deg TUE MAY 01 18 55 19 35 20 03 20 24 04 35 05 03 05 42 09 53 14 19 19 23 9.5 0.8 8 1637-1808 51 WED MAY 02 18 56 19 36 20 03 21 16 04 34 05 02 05 42 09 58 14 23 19 26 9.4 1.7 17 1728-1959 60 THU MAY 03 18 56 19 36 20 04 22 06 04 34 05 01 05 41 10 02 14 27 19 29 9.4 2.5 26 1820-2055 70 FRI MAY 04 18 56 19 36 20 04 22 55 04 33 05 01 05 41 10 06 14 31 19 33 9.4 3.3 35 1911-2050 80 SAT MAY 05 18 57 19 37 20 05 23 41 04 32 05 00 05 40 10 11 14 35 19 36 9.4 4.1 43 2000-1947 89 SUN MAY 06 18 57 19 37 20 05 00 26 04 31 04 59 05 40 10 15 14 39 19 39 9.4 4.8 51 2051-1809 >90 MON MAY 07 18 58 19 38 20 06 01 08 04 31 04 59 05 39 10 20 14 43 19 43 9.4 5.5 58 2140-1536 >90 TUE MAY 08 18 58 19 38 20 06 01 48 04 30 04 58 05 39 10 24 14 47 19 46 9.3 6.2 66 2228-1222 >90 WED MAY 09 18 58 19 39 20 07 02 28 04 29 04 58 05 38 10 29 14 51 19 50 9.3 6.8 73 2315-0835 >90 THU MAY 10 18 59 19 39 20 08 03 07 14 50 04 29 04 57 05 38 10 33 14 55 19 52 9.3 7.5 80 0003-0421 >90 FRI MAY 11 18 59 19 40 20 08 03 47 15 43 04 28 04 57 05 37 10 38 14 59 19 56 9.3 8.1 87 0052 0011 >90 SAT MAY 12 19 00 19 40 20 09 04 28 16 38 04 28 04 56 05 37 10 42 15 03 19 59 9.3 8.8 94 0142 0449 >90 SUN MAY 13 19 00 19 41 20 09 05 13 17 35 04 27 04 55 05 36 10 47 15 06 20 02 9.2 9.2 100 0234 0920 >90 MON MAY 14 19 00 19 41 20 10 06 00 18 35 04 26 04 55 05 36 10 51 15 10 20 06 9.2 9.2 100 0329 1325 >90 TUE MAY 15 19 01 19 42 20 10 06 53 19 38 04 26 04 54 05 35 10 56 15 14 20 09 9.2 9.2 100 0427 1646 >90 WED MAY 16 19 01 19 42 20 11 20 42 04 25 04 54 05 35 11 00 15 18 20 13 9.2 8.2 89 0527 1905 >90 THU MAY 17 19 02 19 43 20 12 21 45 04 25 04 54 05 35 11 05 15 22 20 17 9.2 7.2 77 0629 2007 >90 FRI MAY 18 19 02 19 43 20 12 22 45 04 24 04 53 05 34 11 08 15 26 20 20 9.2 6.1 66 0731 1947 >90 SAT MAY 19 19 03 19 44 20 13 23 42 04 24 04 53 05 34 11 13 15 30 20 24 9.1 5.2 56 0832 1807 >90 SUN MAY 20 19 03 19 44 20 13 00 33 04 23 04 52 05 34 11 17 15 34 20 27 9.1 4.3 47 0931 1516 86 MON MAY 21 19 03 19 45 20 14 01 20 04 23 04 52 05 33 11 22 15 38 20 31 9.1 3.5 38 1026 1138 75 TUE MAY 22 19 04 19 45 20 14 02 04 04 23 04 52 05 33 11 26 15 42 20 35 9.1 2.8 30 1119 0722 65 WED MAY 23 19 04 19 46 20 15 02 45 04 22 04 51 05 33 11 31 15 46 20 38 9.1 2.1 23 1210 0245 55 THU MAY 24 19 05 19 46 20 15 14 45 03 25 04 22 04 51 05 33 11 35 15 50 20 42 9.1 1.4 15 1300-0158 47 FRI MAY 25 19 05 19 47 20 16 15 38 04 04 04 21 04 51 05 32 11 40 15 54 20 46 9.1 0.8 8 1349-0632 40 SAT MAY 26 19 06 19 47 20 17 16 32 04 45 04 21 04 50 05 32 11 44 15 58 20 49 9.1 0.1 0 1439-1046 36 SUN MAY 27 19 06 19 48 20 17 17 24 05 26 04 21 04 50 05 32 11 49 16 02 20 52 9.0 0.0 0 1529-1428 35 MON MAY 28 19 06 19 48 20 18 18 17 06 09 04 20 04 50 05 32 11 53 16 06 20 56 9.0 0.0 0 1620-1729 37 TUE MAY 29 19 07 19 49 20 18 19 08 06 55 04 20 04 50 05 32 11 58 16 10 21 00 9.0 0.0 0 1711-1940 42 WED MAY 30 19 07 19 49 20 19 19 59 04 20 04 49 05 31 12 02 16 14 21 03 9.0 0.2 1 1803-2057 49 THU MAY 31 19 08 19 50 20 19 20 49 04 20 04 49 05 31 12 07 16 17 21 07 9.0 1.0 10 1855-2117 56 ONE LINE REFERS TO EVENING DATE LAST QUARTER May 08 02:08 UT AND FOLLOWING MORNING. NEW MOON May 15 11:47 UT All dates and times are zone HST FIRST QUARTER May 22 03:49 UT in upper table (except sid time). FULL MOON May 29 14:19 UT