Interaction between religion and science to explain rhythms
in nature and man’s activities. Calendars. To describe movement of
constellations to organize activities of planting and harvesting, seasons of
storms and calm for travel in mountains, flood-lands, and rivers and oceans. To
set the dates of religious festivals Christmas and Easter. Clocks to regulate
daily activities (historical shift from the god(s) time to man’s time).
See Stuart McCready (ed.) 2001. The Discovery of Time. Sourcebooks, Inc.
Naperville, IL.
Babylonian calendar -- had 12 29- or 30-day lunar months.
Lunar months, each beginning on the evening when the crescent of the new moon
was first visible. An extra month was added (intercalated) at irregular
intervals to bring lunar calendar into line with the seasons. p 59. Similarity
in Babylonian, Assyrian, and Jewish month names.
Babylonian star calendar pp. 64-73.
Islamic calendar – lunar. Each month starts when the first sliver of the crescent
moon is sighted, about two days after the actual new moon. The months of calendar
alternate 29 and 30 days, with 29 and ½ days taken as lunar month. No adjustment
of calendar to bring into agreement with seasons.
Greek parapegma.star calendar.
Transition from star calendars to solar calendars. Greeks,
then Roman Julian calendar. Finally Gregorian calendar recognized Leap Year
mid 1570s. Gregorian calendar finally accepted in Asia in Japan 1873 Japan and
China 1949.