New Year in different regions is celebrated as per their regional
calendar. Countries have their fixed calendar dates and begin their New
Year celebrations according to that only. The most popularly used
calendars of recent years are Lunar, Solar, Lunisolar and Arbitrary
calendars. Today, most of the religions follow either solar, lunar or
lunisolar calendar. Arbitrary calendar was only used by the astronomers
for references, computations and conversions. Otherwise it does not have
any astronomical base.
Calendar
A calendar is a complete system for naming periods of time particularly
days. These names are calendar dates. It can be defined as any of
various systems of reckoning time, especially with reference to the
beginning, length, and divisions of the year. The dates are based on the
movement of astronomical objects. Calendar is a register with the days
of each month and week in a year. As a subset, it is used to denote a
list of particular set of planned events. For example: Court Calendar
Lunar Calendar: It is one which
indicates the moon phase. Islamic Calendar is an example of Lunar
Calendar.
Solar Calendar: It indicates the
revolution of Earth around the Sun to measure time. Persian Calendar is
an example of Solar Calendar.
Lunisolar Calendar: It is
synchronized both to the motions of the Moon and to the apparent motion
of the Sun. An example is the Jewish Calendar.
Arbitrary Calendar: It is not
synchronized to either the Moon or the Sun. Its examples are the week
and the Julian day.
