KECK OBSERVATORY CALENDAR FOR 2001  -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
    2001      SET                  RISE   SET                  RISE   TWI    MID   DAWN  LENGTH DARK___ 
                      12     18                   18     12            12            12     h    h    %  midnight
 THU FEB 01  18 24  19 03  19 29         01 37  05 42  06 08  06 47  03 31  08 29  14 38  11.1  4.5  40 0334+1504
 FRI FEB 02  18 25  19 04  19 30         02 37  05 41  06 08  06 46  03 36  08 33  14 42  11.1  3.5  31 0429+1839
 SAT FEB 03  18 25  19 04  19 30         03 39  05 41  06 07  06 46  03 40  08 37  14 45  11.0  2.5  22 0528+2115
 SUN FEB 04  18 26  19 05  19 31         04 43  05 41  06 07  06 46  03 45  08 41  14 49  11.0  1.4  12 0631+2232
 MON FEB 05  18 26  19 05  19 31         05 45  05 41  06 07  06 45  03 49  08 45  14 53  11.0  0.4   3 0736+2215
 TUE FEB 06  18 27  19 06  19 32  16 47  06 45  05 40  06 06  06 45  03 54  08 48  14 55  11.0  0.0   0 0841+2020
 WED FEB 07  18 27  19 06  19 32  17 55  07 39  05 40  06 06  06 45  03 58  08 52  14 59  11.0  0.0   0 0944+1658
 THU FEB 08  18 28  19 06  19 32  19 02         05 40  06 06  06 44  04 02  08 56  15 03  11.0  0.0   0 1044+1228
 FRI FEB 09  18 28  19 07  19 33  20 06         05 39  06 05  06 44  04 07  09 00  15 06  11.0  1.0   8 1141+0716
 SAT FEB 10  18 29  19 07  19 33  21 08         05 39  06 05  06 43  04 10  09 04  15 10  11.0  2.0  18 1235+0148
 SUN FEB 11  18 29  19 08  19 34  22 06         05 39  06 04  06 43  04 15  09 08  15 13  10.9  3.0  27 1327-0335
 MON FEB 12  18 30  19 08  19 34  23 02         05 38  06 04  06 42  04 19  09 12  15 17  10.9  3.9  35 1417-0838
 TUE FEB 13  18 30  19 09  19 35  23 57         05 38  06 03  06 42  04 24  09 16  15 20  10.9  4.8  44 1508-1306
 WED FEB 14  18 31  19 09  19 35  00 51         05 37  06 03  06 41  04 28  09 20  15 24  10.9  5.7  52 1558-1650
 THU FEB 15  18 31  19 10  19 35  01 45         05 37  06 02  06 41  04 33  09 24  15 27  10.9  6.6  60 1649-1943
 FRI FEB 16  18 32  19 10  19 36  02 37         05 36  06 02  06 40  04 37  09 28  15 31  10.9  7.5  68 1740-2138
 SAT FEB 17  18 32  19 10  19 36  03 27         05 36  06 01  06 40  04 41  09 32  15 34  10.9  8.3  76 1832-2233
 SUN FEB 18  18 33  19 11  19 36  04 16         05 35  06 01  06 39  04 46  09 36  15 38  10.8  9.1  83 1923-2226
 MON FEB 19  18 33  19 11  19 37  05 02         05 35  06 00  06 38  04 50  09 40  15 41  10.8  9.9  91 2014-2119
 TUE FEB 20  18 33  19 11  19 37  05 46  16 43  05 34  06 00  06 38  04 54  09 44  15 45  10.8 10.6  97 2104-1917
 WED FEB 21  18 34  19 12  19 37  06 26  17 33  05 33  05 59  06 37  04 59  09 48  15 48  10.8 10.8 100 2152-1625
 THU FEB 22  18 34  19 12  19 38  07 05  18 24  05 33  05 59  06 36  05 03  09 52  15 52  10.8 10.8 100 2239-1250
 FRI FEB 23  18 35  19 13  19 38  07 41  19 14  05 32  05 58  06 36  05 08  09 56  15 54  10.7 10.7  99 2325-0843
 SAT FEB 24  18 35  19 13  19 39         20 03  05 32  05 57  06 35  05 12  09 59  15 57  10.7  9.9  92 0010-0413
 SUN FEB 25  18 35  19 13  19 39         20 53  05 31  05 57  06 34  05 16  10 03  16 01  10.7  9.1  84 0056+0030
 MON FEB 26  18 36  19 14  19 39         21 44  05 30  05 56  06 34  05 21  10 07  16 04  10.7  8.2  76 0142+0517
 TUE FEB 27  18 36  19 14  19 40         22 36  05 30  05 55  06 33  05 25  10 11  16 07  10.7  7.3  68 0230+0955
 WED FEB 28  18 37  19 14  19 40         23 30  05 29  05 55  06 32  05 28  10 15  16 11  10.7  6.4  60 0320+1412

                ONE LINE REFERS TO EVENING DATE    FIRST QUARTER  FEB 01   14:06  UT
                AND FOLLOWING MORNING.             FULL MOON      FEB 08   07:12  UT
                All dates and times are zone HST   LAST QUARTER   FEB 15   03:26  UT
                in upper table (except sid time).  NEW MOON       FEB 23   08:25  UT