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Home > Solar calendar


A solar calendar is a calendar whose dates indicate the season and so are synchronized to the declination of the sun. The mean calendar year approximates the tropical year.

The following are solar calendars:

Every one of these calendars has a year of 365 days, which is occasionally extended by adding an extra day to form a leap year.

The following are lunisolar calendars; they have dates that also indicate the moon phase:

Calendars that are not solar calendars, include the Islamic calendarThe Islamic calendar or Muslim calendar is the calendar used to date events in predominately Muslim countries, and used by Muslims everywhere to determine the proper day on which to celebrate Muslim holy days. It is a purely lunar calendar having 12 lunar which is a pure lunar calendarA lunar calendar is a calendar whose date indicates the moon phase. This is normally done by having a month which corresponds to a lunation so that the day of month indicates the moon phase. A lunar calendar may indicate the season as well as the moon pha and calendars synchronized to the synodic period of VenusVenus is the second planet from the Sun, named after the Roman goddess Venus. It is a terrestrial planet, very similar in size and bulk composition to Earth; it is sometimes called Earth's "sister planet" as a result of this similarity. Although all plane or to the heliacal risingThe heliacal rising of a star (or other body such as the moon or a planet) occurs when it first becomes visible above the eastern horizon at dawn, after a period where it was hidden below the horizon or when it was just above the horizon but hidden by thes of stars.

Calendars



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