KECK OBSERVATORY CALENDAR FOR 2001  -NAUTICAL
                                     (computed for altitude 4145.0 m)
                                                                              NAUTICAL (12 deg) TWILIGHT/DAWN
     DATE(HST)    SUN    TWILIGHT ENDS   MOON   MOON    DAWN BEGINS    SUN        SIDEREAL TIMES    NIGHT (12 deg)
        2001      SET     12     18      RISE   SET      18     12     RISE     TWI    MID    DAWN  LENGTH  DARK__
                                                                                 12            12     h     h    %
    SAT  SEP 01  18 48   19 26  19 52   18 10  06 10   04 52  05 18   05 56    17 50  22 25  03 43   9.9   0.0   0
    SUN  SEP 02  18 47   19 25  19 52   18 47  06 59   04 52  05 18   05 57    17 53  22 29  03 47   9.9   0.0   0
    MON  SEP 03  18 46   19 24  19 51   19 22  07 48   04 52  05 19   05 57    17 56  22 32  03 52   9.9   0.0   0
    TUE  SEP 04  18 45   19 23  19 50   19 56          04 53  05 19   05 57    17 59  22 36  03 56   9.9   0.5   5
    WED  SEP 05  18 44   19 22  19 49   20 30          04 53  05 19   05 57    18 02  22 40  04 00   9.9   1.1  11
    THU  SEP 06  18 43   19 21  19 48   21 06          04 53  05 19   05 57    18 05  22 44  04 04  10.0   1.8  17
    FRI  SEP 07  18 42   19 21  19 47   21 43          04 54  05 20   05 58    18 08  22 48  04 09  10.0   2.4  23
    SAT  SEP 08  18 42   19 20  19 46   22 24          04 54  05 20   05 58    18 11  22 52  04 13  10.0   3.1  30
    SUN  SEP 09  18 41   19 19  19 45   23 09          04 54  05 20   05 58    18 14  22 56  04 17  10.0   3.8  38
    MON  SEP 10  18 40   19 18  19 44   00 00          04 54  05 20   05 58    18 17  23 00  04 21  10.0   4.7  46
    TUE  SEP 11  18 39   19 17  19 43   00 57          04 55  05 21   05 59    18 20  23 04  04 26  10.1   5.7  56
    WED  SEP 12  18 38   19 16  19 42   01 59          04 55  05 21   05 59    18 23  23 08  04 30  10.1   6.7  66
    THU  SEP 13  18 37   19 15  19 41   03 04  16 01   04 55  05 21   05 59    18 26  23 12  04 34  10.1   7.8  77
    FRI  SEP 14  18 36   19 14  19 40   04 11  16 56   04 56  05 21   05 59    18 29  23 16  04 38  10.1   8.9  88
    SAT  SEP 15  18 35   19 13  19 39   05 16  17 46   04 56  05 22   05 59    18 32  23 20  04 43  10.1  10.0  99
    SUN  SEP 16  18 34   19 12  19 38   06 21  18 33   04 56  05 22   06 00    18 35  23 24  04 47  10.2  10.2 100
    MON  SEP 17  18 33   19 11  19 37   07 23  19 17   04 56  05 22   06 00    18 38  23 28  04 51  10.2  10.1  99
    TUE  SEP 18  18 32   19 10  19 36          20 01   04 57  05 22   06 00    18 41  23 32  04 55  10.2   9.4  91
    WED  SEP 19  18 32   19 09  19 35          20 44   04 57  05 23   06 00    18 44  23 36  04 59  10.2   8.6  84
    THU  SEP 20  18 31   19 08  19 34          21 28   04 57  05 23   06 00    18 47  23 40  05 03  10.2   7.9  77
    FRI  SEP 21  18 30   19 07  19 33          22 13   04 57  05 23   06 01    18 50  23 43  05 07  10.3   7.2  69
    SAT  SEP 22  18 29   19 06  19 32          23 01   04 58  05 23   06 01    18 53  23 47  05 11  10.3   6.4  61
    SUN  SEP 23  18 28   19 05  19 31          23 51   04 58  05 23   06 01    18 56  23 51  05 15  10.3   5.5  53
    MON  SEP 24  18 27   19 05  19 30          00 42   04 58  05 24   06 01    18 59  23 55  05 20  10.3   4.7  45
    TUE  SEP 25  18 26   19 04  19 29          01 33   04 58  05 24   06 01    19 02  23 59  05 24  10.3   3.9  37
    WED  SEP 26  18 25   19 03  19 28          02 25   04 59  05 24   06 02    19 05  00 03  05 28  10.4   3.0  28
    THU  SEP 27  18 24   19 02  19 27          03 16   04 59  05 24   06 02    19 08  00 07  05 32  10.4   2.1  20
    FRI  SEP 28  18 23   19 01  19 26   16 10  04 06   04 59  05 25   06 02    19 11  00 11  05 37  10.4   1.3  12
    SAT  SEP 29  18 22   19 00  19 26   16 47  04 56   04 59  05 25   06 02    19 14  00 15  05 41  10.4   0.5   4
    SUN  SEP 30  18 22   18 59  19 25   17 23  05 44   04 59  05 25   06 03    19 17  00 19  05 45  10.4   0.0   0

                ONE LINE REFERS TO EVENING DATE    FULL MOON      SEP 02   21:46  UT
                AND FOLLOWING MORNING.             LAST QUARTER   SEP 10   19:03  UT
                All dates and times are zone HST   NEW MOON       SEP 17   10:30  UT
                in upper table (except sid time).  FIRST QUARTER  SEP 24   09:32  UT