OBSERVING PERIODS- 2013
      (UT dates. Lick PST=UT-8h   Keck HST=UT-10h)
      --------------------------------------------
            DURATION       RUN           MOON
           FQ+1 to LQ      bright     PHASE  DATE
           LQ+1 to FQ      dark              (UT)
     ---------------------------------------------
     2012 Dec 21-Jan 05    BRIGHT    FULL   Dec 28
     2013 Jan 06-Jan 18    DARK      NEW    Jan 11
     2013 Jan 19-Feb 03    BRIGHT    FULL   Jan 27
     2013 Feb 04-Feb 17    DARK      NEW    Feb 10
     2013 Feb 18-Mar 04    BRIGHT    FULL   Feb 25
     2013 Mar 05-Mar 19    DARK      NEW    Mar 11
     2013 Mar 20-Apr 03    BRIGHT    FULL   Mar 27
     2013 Apr 04-Apr 18    DARK      NEW    Apr 10
     2013 Apr 19-May 02    BRIGHT    FULL   Apr 25
     2013 May 03-May 18    DARK      NEW    May 10
     2013 May 19-May 31    BRIGHT    FULL   May 25
     2013 Jun 01-Jun 16    DARK      NEW    Jun 08
     2013 Jun 17-Jun 30    BRIGHT    FULL   Jun 23
     2013 Jul 01-Jul 16    DARK      NEW    Jul 08
     2013 Jul 17-Jul 29    BRIGHT    FULL   Jul 22
     2013 Jul 30-Aug 14    DARK      NEW    Aug 06
     2013 Aug 15-Aug 28    BRIGHT    FULL   Aug 21
     2013 Aug 29-Sep 12    DARK      NEW    Sep 05
     2013 Sep 13-Sep 27    BRIGHT    FULL   Sep 19
     2013 Sep 28-Oct 11    DARK      NEW    Oct 05
     2013 Oct 12-Oct 26    BRIGHT    FULL   Oct 18
     2013 Oct 27-Nov 10    DARK      NEW    Nov 03
     2013 Nov 11-Nov 25    BRIGHT    FULL   Nov 17
     2013 Nov 26-Dec 09    DARK      NEW    Dec 03
     2013 Dec 10-Dec 25    BRIGHT    FULL   Dec 17
     2013 Dec 26-Jan 08    DARK      NEW    Jan 01
     ---------------------------------------------