OBSERVING PERIODS- 2025
      (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)
     ---------------------------------------------
     2024 Dec 23-Jan 06    DARK      NEW    Dec 30
     2025 Jan 07-Jan 21    BRIGHT    FULL   Jan 13
     2025 Jan 22-Feb 05    DARK      NEW    Jan 29
     2025 Feb 06-Feb 20    BRIGHT    FULL   Feb 12
     2025 Feb 21-Mar 06    DARK      NEW    Feb 28
     2025 Mar 07-Mar 22    BRIGHT    FULL   Mar 14
     2025 Mar 23-Apr 05    DARK      NEW    Mar 29
     2025 Apr 06-Apr 21    BRIGHT    FULL   Apr 13
     2025 Apr 22-May 04    DARK      NEW    Apr 27
     2025 May 05-May 20    BRIGHT    FULL   May 12
     2025 May 21-Jun 03    DARK      NEW    May 27
     2025 Jun 04-Jun 18    BRIGHT    FULL   Jun 11
     2025 Jun 19-Jul 02    DARK      NEW    Jun 25
     2025 Jul 03-Jul 18    BRIGHT    FULL   Jul 10
     2025 Jul 19-Aug 01    DARK      NEW    Jul 24
     2025 Aug 02-Aug 16    BRIGHT    FULL   Aug 09
     2025 Aug 17-Aug 31    DARK      NEW    Aug 23
     2025 Sep 01-Sep 14    BRIGHT    FULL   Sep 07
     2025 Sep 15-Sep 29    DARK      NEW    Sep 21
     2025 Sep 30-Oct 13    BRIGHT    FULL   Oct 07
     2025 Oct 14-Oct 29    DARK      NEW    Oct 21
     2025 Oct 30-Nov 12    BRIGHT    FULL   Nov 05
     2025 Nov 13-Nov 28    DARK      NEW    Nov 20
     2025 Nov 29-Dec 11    BRIGHT    FULL   Dec 04
     2025 Dec 12-Dec 27    DARK      NEW    Dec 20
     2025 Dec 28-Jan 10    BRIGHT    FULL   Jan 03
     ---------------------------------------------