What is LUNAR CALENDAR?

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What does LUNAR CALENDAR mean? LUNAR CALENDAR meaning - LUNAR CALENDAR definition - LUNAR CALENDAR explanation. What is the meaning of LUNAR CALENDAR? What is the definition of LUNAR CALENDAR? What does LUNAR CALENDAR stand for? What is LUNAR CALENDAR meaning? What is LUNAR CALENDAR definition?

A lunar calendar is a calendar that is based on cycles of the lunar phases. This can be contrasted with the Gregorian calendar, which is a solar calendar based on the revolution of the Earth around the sun. Because there are slightly more than twelve lunations (synodic months) in a solar year, the period of 12 lunar months (354.367 days) is sometimes referred to as a lunar year.

A common purely lunar calendar is the Islamic (or Hijri Qamari) calendar. A feature of the Islamic calendar is that a year is always 12 months, so the months are not linked with the seasons and drift each solar year by 11 to 12 days. It comes back to the position it had in relation to the solar year approximately every 33 Islamic years. It is used mainly for religious purposes, but in Saudi Arabia it is the official calendar. Other lunar calendars often include extra months added occasionally to synchronize it with the solar calendar.

The oldest known lunar calendar was found in Scotland at Warren Field and dates back to around 8,000 BC. Alexander Marshack, in a controversial reading, believed that marks on a bone baton (c. 25,000 BCE) represented a lunar calendar. Similarly, Michael Rappenglueck believes that marks on a 17,000-year-old cave painting in Lascaux represent a lunar calendar.