Calendar | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-03-20

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Calendar


00:01:56 1 History
00:04:26 1.1 Modern reforms
00:05:20 2 Calendar systems
00:08:30 2.1 Solar calendars
00:09:14 2.2 Lunar calendars
00:10:28 2.3 Lunisolar calendars
00:10:55 3 Calendar subdivisions
00:12:51 4 Other calendar types
00:13:02 4.1 Arithmetic and astronomical calendars
00:14:38 4.2 Complete and incomplete calendars
00:15:21 5 Calendars in use
00:17:07 5.1 Gregorian calendar
00:19:09 5.2 Religious calendars
00:22:24 5.3 National calendars
00:23:25 5.4 Fiscal calendars
00:25:21 6 Formats
00:27:49 6.1 Calendaring software
00:28:48 7 See also



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SUMMARY
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A calendar is a system of organizing days for social, religious, commercial or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single, specific day within such a system. A calendar is also a physical record (often paper) of such a system. A calendar can also mean a list of planned events, such as a court calendar or a partly or fully chronological list of documents, such as a calendar of wills.
Periods in a calendar (such as years and months) are usually, though not necessarily, synchronised with the cycle of the sun or the moon. The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronised with the solar year over the long term.
The term calendar is taken from calendae, the term for the first day of the month in the Roman calendar, related to the verb calare "to call out", referring to the "calling" of the new moon when it was first seen.
Latin calendarium meant "account book, register" (as accounts were settled and debts were collected on the calends of each month). The Latin term was adopted in Old French as calendier and from there in Middle English as calender by the 13th century (the spelling calendar is early modern). A calendar can be on paper or electronic device.