These are yearly calendars for Lick and Keck Observatories at each date:

• sunrise/sunset
• moonrise/moonset
• sidereal times (at twilight, midnight, dawn)
• length of night (whole night, dark hours, % dark)

Data at each observatory given for:

• 1998-2010 nautical (12 deg)
• 1998-2010 astronomical (18 deg)

Calendars compiled by Dr. Arnold Klemola. Contact webeditor@ucolick.org if you cannot access these calendars.