KECK OBSERVATORY CALENDAR FOR 1998 -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 1998 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ 12 18 18 12 12 12 h h % midnight MON JUN 01 19 08 19 50 20 20 01 08 04 19 04 49 05 31 12 10 16 21 21 11 9.0 3.7 41 1111+0614 TUE JUN 02 19 08 19 50 20 20 01 45 04 19 04 49 05 31 12 14 16 25 21 15 9.0 3.1 34 1157+0227 WED JUN 03 19 09 19 51 20 21 02 22 04 19 04 49 05 31 12 19 16 29 21 18 9.0 2.4 27 1241-0123 THU JUN 04 19 09 19 51 20 21 02 58 04 19 04 49 05 31 12 23 16 33 21 22 9.0 1.8 20 1326-0510 FRI JUN 05 19 09 19 52 20 22 03 36 04 19 04 49 05 31 12 28 16 37 21 26 8.9 1.2 13 1412-0846 SAT JUN 06 19 10 19 52 20 22 16 07 04 15 04 19 04 49 05 31 12 32 16 41 21 30 8.9 0.6 6 1459-1203 SUN JUN 07 19 10 19 53 20 23 16 57 04 57 04 19 04 49 05 31 12 37 16 44 21 34 8.9 0.0 0 1548-1453 MON JUN 08 19 11 19 53 20 23 17 49 05 42 04 19 04 49 05 31 12 41 16 48 21 38 8.9 0.0 0 1638-1705 TUE JUN 09 19 11 19 53 20 23 18 41 06 30 04 19 04 49 05 31 12 45 16 52 21 42 8.9 0.0 0 1731-1831 WED JUN 10 19 11 19 54 20 24 19 34 07 22 04 19 04 49 05 31 12 50 16 56 21 46 8.9 0.0 0 1825-1902 THU JUN 11 19 12 19 54 20 24 20 26 04 19 04 49 05 31 12 54 17 00 21 50 8.9 0.5 5 1920-1833 FRI JUN 12 19 12 19 55 20 25 21 17 04 19 04 49 05 31 12 59 17 04 21 54 8.9 1.4 15 2015-1704 SAT JUN 13 19 12 19 55 20 25 22 07 04 19 04 49 05 31 13 02 17 08 21 58 8.9 2.2 24 2110-1438 SUN JUN 14 19 13 19 55 20 25 22 54 04 19 04 49 05 31 13 06 17 12 22 02 8.9 3.0 33 2204-1122 MON JUN 15 19 13 19 56 20 26 23 39 04 19 04 49 05 32 13 11 17 16 22 06 8.9 3.7 41 2258-0727 TUE JUN 16 19 13 19 56 20 26 00 24 04 19 04 49 05 32 13 15 17 20 22 10 8.9 4.5 50 2351-0304 WED JUN 17 19 13 19 56 20 26 01 08 04 19 04 49 05 32 13 19 17 24 22 14 8.9 5.2 58 0045+0131 THU JUN 18 19 14 19 56 20 27 01 54 04 19 04 49 05 32 13 23 17 28 22 18 8.9 6.0 67 0139+0605 FRI JUN 19 19 14 19 57 20 27 02 41 04 19 04 50 05 32 13 28 17 32 22 23 8.9 6.7 75 0235+1021 SAT JUN 20 19 14 19 57 20 27 03 30 16 03 04 20 04 50 05 32 13 32 17 36 22 27 8.9 7.5 84 0332+1400 SUN JUN 21 19 14 19 57 20 27 04 22 17 05 04 20 04 50 05 33 13 36 17 40 22 30 8.9 8.4 94 0431+1647 MON JUN 22 19 15 19 57 20 28 05 17 18 06 04 20 04 50 05 33 13 40 17 44 22 34 8.9 8.9 100 0530+1830 TUE JUN 23 19 15 19 58 20 28 06 14 19 06 04 20 04 50 05 33 13 45 17 48 22 38 8.9 8.9 100 0630+1902 WED JUN 24 19 15 19 58 20 28 07 11 20 02 04 21 04 51 05 33 13 49 17 51 22 43 8.9 8.8 99 0728+1825 THU JUN 25 19 15 19 58 20 28 20 54 04 21 04 51 05 34 13 53 17 55 22 47 8.9 8.0 89 0824+1647 FRI JUN 26 19 15 19 58 20 28 21 42 04 21 04 51 05 34 13 57 17 59 22 51 8.9 7.1 80 0917+1419 SAT JUN 27 19 16 19 58 20 28 22 25 04 21 04 52 05 34 14 01 18 03 22 56 8.9 6.5 72 1008+1113 SUN JUN 28 19 16 19 58 20 28 23 05 04 22 04 52 05 34 14 05 18 07 23 00 8.9 5.8 64 1056+0742 MON JUN 29 19 16 19 58 20 28 23 44 04 22 04 52 05 35 14 09 18 11 23 04 8.9 5.1 57 1142+0356 TUE JUN 30 19 16 19 58 20 29 00 20 04 22 04 53 05 35 14 12 18 15 23 09 8.9 4.5 51 1227+0003 ONE LINE REFERS TO EVENING DATE FIRST QUARTER JUN 02 01:49 UT AND FOLLOWING MORNING. FULL MOON JUN 10 04:23 UT All dates and times are zone HST LAST QUARTER JUN 17 10:41 UT in upper table (except sid time). NEW MOON JUN 24 03:53 UT