Many ancient calendars are based on the cycles of the Sun or Moon. The Hellenic calendar incorporated these cycles. A lunisolar calendar based on both cycles is difficult. Some Greek astronomers worked out calendars based on the eclipse cycle.
Read more about this topic: Greek Astronomy
Other articles related to "calendar, calendars":
... An annual calendar is a representation of the year that expires with the year represented, or that must be altered annually to remain current ... One is for static (synchronic) calendars, such as wall calendars or calendar systems ... The other is for dynamic (diachronic) calendars, such as digital calendars or timepieces ...
... Calendars of the Grants of Probate and Letters of Administration or CGPLA was an index published in the United Kingdom and Ireland that lists an alphabetical summary of ... The correct full title for Ireland is Calendars of the Grants of Probate and Letters of Administration Made in the Principal Registry and in the ...
... Hindu, Burmese, Bengali, and Tibetan calendars, as well as the traditional Chinese, Japanese, Vietnamese, Mongolian and Korean calendars, plus the ancient Hellenic ... Also some of the ancient pre-Islamic calendars in South Arabia followed a lunisolar system ... The Chinese, Coligny and Hebrew lunisolar calendars track more or less the tropical year whereas the Buddhist and Hindu lunisolar calendars track the sidereal year ...
... In any country, the civil calendar is the calendar, or possibly one of several calendars, used within that country for civil, official or administrative purposes ... The civil calendar is almost always used for general purposes by people and private organizations ... The most widespread civil calendar and de facto international standard is the Gregorian calendar ...
Famous quotes containing the word calendars:
“Tomorrow in the offices the year on the stamps will be altered;
Tomorrow new diaries consulted, new calendars stand;
With such small adjustments life will again move forward
Implicating us all; and the voice of the living be heard:
It is to us that you should turn your straying attention;
Us who need you, and are affected by your fortune;
Us you should love and to whom you should give your word.”
—Philip Larkin (19221986)