KECK OBSERVATORY CALENDAR FOR 2004  -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
    2004      SET                  RISE   SET                  RISE   TWI    MID   DAWN  LENGTH DARK___ 
                      12     18                   18     12            12            12     h    h    %  midnight
 SUN AUG 01  19 09  19 50  20 18  20 09         04 39  05 07  05 47  16 13  20 23  01 31   9.3  0.3   3 2231-1359
 MON AUG 02  19 09  19 49  20 17  20 51         04 39  05 07  05 48  16 16  20 27  01 35   9.3  1.0  11 2323-0755
 TUE AUG 03  19 08  19 48  20 16  21 28         04 40  05 08  05 48  16 19  20 31  01 40   9.3  1.7  17 0012-0140
 WED AUG 04  19 07  19 48  20 16  22 03         04 40  05 08  05 48  16 23  20 35  01 44   9.3  2.2  24 0059+0427
 THU AUG 05  19 07  19 47  20 15  22 37         04 41  05 09  05 49  16 26  20 39  01 49   9.4  2.8  30 0145+1012
 FRI AUG 06  19 06  19 46  20 14  23 12         04 41  05 09  05 49  16 28  20 43  01 53   9.4  3.4  36 0232+1524
 SAT AUG 07  19 06  19 46  20 14  23 49         04 42  05 09  05 49  16 32  20 47  01 57   9.4  4.1  43 0319+1952
 SUN AUG 08  19 05  19 45  20 13  00 29         04 42  05 10  05 50  16 35  20 51  02 02   9.4  4.7  50 0408+2328
 MON AUG 09  19 04  19 44  20 12  01 12         04 43  05 10  05 50  16 38  20 55  02 06   9.4  5.5  57 0459+2602
 TUE AUG 10  19 04  19 44  20 11  01 59         04 43  05 11  05 50  16 42  20 59  02 11   9.4  6.2  66 0552+2726
 WED AUG 11  19 03  19 43  20 11  02 51  16 18  04 44  05 11  05 51  16 45  21 03  02 15   9.5  7.1  75 0646+2734
 THU AUG 12  19 03  19 42  20 10  03 44  17 08  04 44  05 12  05 51  16 48  21 07  02 20   9.5  8.0  84 0739+2626
 FRI AUG 13  19 02  19 41  20 09  04 39  17 54  04 44  05 12  05 51  16 51  21 11  02 24   9.5  9.0  94 0831+2403
 SAT AUG 14  19 01  19 41  20 08  05 34  18 37  04 45  05 12  05 52  16 55  21 15  02 28   9.5  9.5 100 0922+2033
 SUN AUG 15  19 00  19 40  20 07  06 29  19 16  04 45  05 13  05 52  16 58  21 19  02 33   9.6  9.6 100 1011+1606
 MON AUG 16  19 00  19 39  20 06  07 22  19 53  04 46  05 13  05 52  17 01  21 23  02 36   9.6  9.3  97 1058+1053
 TUE AUG 17  18 59  19 38  20 05         20 28  04 46  05 13  05 53  17 04  21 27  02 40   9.6  8.7  91 1144+0509
 WED AUG 18  18 58  19 37  20 05         21 02  04 47  05 14  05 53  17 07  21 30  02 45   9.6  8.2  85 1231-0053
 THU AUG 19  18 58  19 37  20 04         21 37  04 47  05 14  05 53  17 11  21 34  02 49   9.6  7.6  79 1318-0659
 FRI AUG 20  18 57  19 36  20 03         22 14  04 47  05 14  05 54  17 14  21 38  02 53   9.6  7.0  72 1407-1253
 SAT AUG 21  18 56  19 35  20 02         22 55  04 48  05 15  05 54  17 17  21 42  02 58   9.7  6.3  65 1459-1816
 SUN AUG 22  18 55  19 34  20 01         23 41  04 48  05 15  05 54  17 20  21 46  03 02   9.7  5.6  57 1556-2247
 MON AUG 23  18 54  19 33  20 00         00 33  04 49  05 15  05 54  17 22  21 50  03 06   9.7  4.7  48 1656-2602
 TUE AUG 24  18 54  19 32  19 59         01 32  04 49  05 16  05 55  17 25  21 54  03 11   9.7  3.7  38 1800-2738
 WED AUG 25  18 53  19 32  19 58         02 37  04 49  05 16  05 55  17 29  21 58  03 15   9.7  2.7  27 1906-2722
 THU AUG 26  18 52  19 31  19 57  16 15  03 44  04 50  05 16  05 55  17 32  22 02  03 19   9.8  1.5  15 2010-2513
 FRI AUG 27  18 51  19 30  19 56  17 10  04 51  04 50  05 17  05 55  17 35  22 06  03 24   9.8  0.4   4 2111-2125
 SAT AUG 28  18 50  19 29  19 55  17 59  05 55  04 51  05 17  05 56  17 38  22 10  03 28   9.8  0.0   0 2209-1620
 SUN AUG 29  18 49  19 28  19 54  18 43  06 55  04 51  05 17  05 56  17 41  22 14  03 32   9.8  0.0   0 2302-1025
 MON AUG 30  18 49  19 27  19 53  19 22  07 52  04 51  05 18  05 56  17 44  22 18  03 37   9.8  0.0   0 2352-0407
 TUE AUG 31  18 48  19 26  19 52  19 58         04 52  05 18  05 56  17 47  22 22  03 41   9.9  0.5   5 0040+0212

                ONE LINE REFERS TO EVENING DATE    LAST QUARTER   AUG 07   22:05  UT
                AND FOLLOWING MORNING.             NEW MOON       AUG 16   01:28  UT
                All dates and times are zone HST   FIRST QUARTER  AUG 23   10:14  UT
                in upper table (except sid time).  FULL MOON      AUG 30   02:26  UT