OBSERVING PERIODS- 2019
      (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)
     ---------------------------------------------
     2018 Dec 30-Jan 14    DARK      NEW    Jan 06
     2019 Jan 15-Jan 27    BRIGHT    FULL   Jan 21
     2019 Jan 28-Feb 12    DARK      NEW    Feb 04
     2019 Feb 13-Feb 26    BRIGHT    FULL   Feb 19
     2019 Feb 27-Mar 14    DARK      NEW    Mar 06
     2019 Mar 15-Mar 28    BRIGHT    FULL   Mar 21
     2019 Mar 29-Apr 12    DARK      NEW    Apr 05
     2019 Apr 13-Apr 26    BRIGHT    FULL   Apr 19
     2019 Apr 27-May 12    DARK      NEW    May 04
     2019 May 13-May 26    BRIGHT    FULL   May 18
     2019 May 27-Jun 10    DARK      NEW    Jun 03
     2019 Jun 11-Jun 25    BRIGHT    FULL   Jun 17
     2019 Jun 26-Jul 09    DARK      NEW    Jul 02
     2019 Jul 10-Jul 25    BRIGHT    FULL   Jul 16
     2019 Jul 26-Aug 07    DARK      NEW    Aug 01
     2019 Aug 08-Aug 23    BRIGHT    FULL   Aug 15
     2019 Aug 24-Sep 06    DARK      NEW    Aug 30
     2019 Sep 07-Sep 22    BRIGHT    FULL   Sep 14
     2019 Sep 23-Oct 05    DARK      NEW    Sep 28
     2019 Oct 06-Oct 21    BRIGHT    FULL   Oct 13
     2019 Oct 22-Nov 04    DARK      NEW    Oct 28
     2019 Nov 05-Nov 19    BRIGHT    FULL   Nov 12
     2019 Nov 20-Dec 04    DARK      NEW    Nov 26
     2019 Dec 05-Dec 19    BRIGHT    FULL   Dec 12
     2019 Dec 20-Jan 03    DARK      NEW    Dec 26
     ---------------------------------------------