This is a list of calendars. Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent), Chinese calendars and Mesoamerican calendars. These are not specific calendars but series of historical calendars undergoing reforms or regional diversification.
In Classical Antiquity, the Hellenic calendars inspired the Roman calendar, including the solar Julian calendar introduced in 45 BC. Many modern calendar proposals, including the Gregorian calendar introduced in 1582 AD, contains modifications from that of the Julian calendar.
This is a listofcalendars. Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories...
36707 days), purely lunar calendars are 11 to 12 days shorter than the solar year. In purely lunar calendars, which do not make use of intercalation, the lunar...
A lunisolar calendar is a calendar in many cultures, incorporating lunar calendars and solar calendars. The date of lunisolar calendars therefore indicates...
the ancient Roman calendar and to various Hindu calendars. Calendars in antiquity were lunisolar, depending on the introduction of intercalary months...
civil calendars) in the 20th century, the jump was 13 days. For other countries and territories, see Listof adoption dates of the Gregorian calendar by...
and Muhammadan calendars (1901) pp. 373–5, 382–4. Dershowitz, Nachum; Reingold, Edward (2018). "Table 1.2 Epochs for various calendars". Calendrical Calculations...
added to the calendar as a corrective measure because the Earth does not orbit the Sun in precisely 365 days. Leap year ListofcalendarsListof non-standard...
Julian calendar by transforming them into calendars with years of 365 days with an extra day intercalated every four years. The reformed calendars typically...
synchronized only to the synodic period of Venus would not be solar. Lunisolar calendars may be regarded as solar calendars, although their dates additionally...
varieties of digital calendars. Some have the ability to be connected or synchronized with other calendars across different vendors. The iCalendar 1.0 and...
The Taichu calendar established a framework for traditional calendars, with later calendars adding to the basic formula. The Dàmíng Calendar (大明曆; 大明历;...
they consider the New Year to start. Of the various regional calendars, the most studied and known Hindu calendars are the Shalivahana Shaka (Based on...
The Iranian calendars or Iranian chronology (Persian: گاهشماری ایرانی, Gâh-Şomâriye Irâni) are a succession ofcalendars created and used for over two...
Listof Christian liturgical calendars, calendars used by predominantly Christian communities or countries, and calendars referred to as the "Christian...
The civil calendar is the calendar, or possibly one of several calendars, used within a country for civil, official, or administrative purposes. The civil...
Various ancient Greek calendars began in most states of ancient Greece between autumn and winter except for the Attic calendar, which began in summer....
differs 593 years with Gregorian calendar. The Assamese Calendar incorporates the seven-day week as used by many other calendars. সঞ্জীৱ অসম "Dictionary". https://www...
260-day calendars are still used in the Guatemalan highlands, Veracruz, Oaxaca and Chiapas, Mexico. The importance of aboriginal calendars in ritual...
calendar "Tarikh-ilahi" with the zero year of 1556 was a blend of pre-existing Hindu and Islamic calendars. It was not used much in India outside of Akbar's...
Roman calendar was the calendar used by the Roman Kingdom and Roman Republic. Although the term is primarily used for Rome's pre-Julian calendars, it is...
astronomy Other ancient Greek calendars The Roman, Julian, and Byzantine calendars, which succeeded them Attic Calendar Date Converter Hannah, Robert...
As with the rest of the world, the seven-day week is used alongside both calendars. The solar calendar now governs most aspects of life in Thailand,...
after the death of Kim Il Sung. The calendar borrows elements from two historical calendars used in Korea, the traditional system of Korean era names...
and Armenian calendars Turkish months Brack-Bernsen, Lis (2007). "The 360-Day Year in Mesopotamia". In Steele, John M. (ed.). Calendars and Years: Astronomy...
year and the lunation. Calendars are explicit schemes used for timekeeping. The first historically attested and formulized calendars date to the Bronze Age...
and in calendars and official communications issued by the Government of India. Śaka Samvat is generally 78 years behind the Gregorian Calendar, except...
the Fixed Calendar always has a fixed number of days (28), and includes the Gregorian February 29 (on Gregorian leap years). Lunisolar calendars, with fixed...
The Solar Hijri calendar is a solar calendar and one of the various Iranian calendars. It begins on the March equinox as determined by the astronomical...
The tables below list equivalent dates in the Julian and Gregorian calendars. Years are given in astronomical year numbering. Within these tables, January...