- A book or table, containing a calendar of days, and
months, to which astronomical data and various statistics are often
added, such as the times of the rising and setting of the sun and moon,
eclipses, hours of full tide, stated festivals of churches, terms of
courts, etc.
Air Almanac (ASCC) Air Almanac (ASCC) is a joint publication of the National Almanac Office of the United States Naval Observatory and Her Majesty’s Nautical Almanac Office.