Calendar

From Simple English Wikipedia, the free encyclopedia
Jump to navigation Jump to search
2022 in other calendars
Gregorian calendar2022
MMXXII
Ab urbe condita2775
Armenian calendar1471
ԹՎ ՌՆՀԱ
Assyrian calendar6772
Bahá'í calendar178–179
Balinese saka calendar1943–1944
Bengali calendar1429
Berber calendar2972
British Regnal year70 Eliz. 2 – 71 Eliz. 2
Buddhist calendar2566
Burmese calendar1384
Byzantine calendar7530–7531
Chinese calendar辛丑(Metal Ox)
4718 or 4658
    — to —
壬寅年 (Water Tiger)
4719 or 4659
Coptic calendar1738–1739
Discordian calendar3188
Ethiopian calendar2014–2015
Hebrew calendar5782–5783
Hindu calendars
 - Vikram Samvat2078–2079
 - Shaka Samvat1943–1944
 - Kali Yuga5122–5123
Holocene calendar12022
Igbo calendar1022–1023
Iranian calendar1400–1401
Islamic calendar1443–1444
Japanese calendarReiwa 4
(令和4年)
Javanese calendar1955–1956
Juche calendar111
Julian calendarGregorian minus 13 days
Korean calendar4355
Minguo calendarROC 111
民國111年
Nanakshahi calendar554
Thai solar calendar2565
Tibetan calendar阴金牛年
(female Iron-Ox)
2148 or 1767 or 995
    — to —
阳水虎年
(male Water-Tiger)
2149 or 1768 or 996
Unix time1640995200 – 1672531199

A calendar is a tool for organizing days. People use calendars to say when something happened, and for planning things that have not happened yet. The calendar gives the days names and numbers, called calendar dates. The dates are usually made based on how things in the sky seem to move. The year and month are based on motions of the Sun and moon. By knowing what day something happened or will happen, people have an easier life. Since the beginning of history, knowing when the seasons would start for crops was very important for farmers.

Calendar systems have a beginning time or era. The calendar era is often a religion-based event, such as the birth of Jesus, but it may be a political event such as a coronation or the founding of a state. Dates that are counted from the coronation are called "regnal".

The three principal calendars most used today are the Gregorian, Hebrew, and Islamic calendars. Other calendar systems from many different parts of the world are also used.

Basis[change | change source]

Calendars are based on three natural things:

  1. The Earth turns all the way around its axis.
  2. The Moon goes all the way around the Earth.
  3. The Earth goes all the way around the Sun.

The Earth turns all the way around its axis about 24 hours. It is called the Solar Day. Days of most calendars are strongly based on the Solar Day.

The Moon turns all the way around the Earth about 29 days, 12 hours, 44 minutes and 2 seconds. Months of some calendars are still strongly based on the Moon. These are called Lunar calendars, which lasts about 354-355 days. Solar calendars ignore the moon, and depend entirely on the Sun.

The Earth goes all the way around the Sun in about 365 days, 5 hours, 48 minutes and 46 seconds. This is called the Solar year. Years of most calendars are strongly based on the Solar year.

Related pages[change | change source]

Other websites[change | change source]