year and the lunation. Calendars are explicit schemes used for timekeeping. The first historically attested and formulized calendars date to the Bronze Age...

This is a list of calendars. Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories...

French revolutionary calendar Hebrew calendar Dionysius Exiguus Inter gravissimas in English – Wikisource Julian day History of calendars ISO 8601, an international...

the ancient Roman calendar and to various Hindu calendars. Calendars in antiquity were lunisolar, depending on the introduction of intercalary months...

Hijri calendar.[citation needed] Stern, Sacha (2021). Calendars in the Making: the Origins of Calendars from the Roman Empire to the Later Middle Ages (1st ed...

agricultural calendars have a long history in China. Purely lunar calendar systems were known in China; however, purely lunar calendars tended to be of limited...

A lunisolar calendar is a calendar in many cultures, incorporating lunar calendars and solar calendars. The date of lunisolar calendars therefore indicates...

and in calendars and official communications issued by the Government of India. Śaka Samvat is generally 78 years behind the Gregorian calendar, except...

Julian calendar by transforming them into calendars with years of 365 days with an extra day intercalated every four years. The reformed calendars typically...

Various ancient Greek calendars began in most states of ancient Greece between autumn and winter except for the Attic calendar, which began in summer....

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...

synchronized only to the synodic period of Venus would not be solar. Lunisolar calendars may be regarded as solar calendars, although their dates additionally...

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...

The Iranian calendar or Iranian chronology (Persian: گاه‌شماری ایرانی, Gâh Ŝomâriye Irâni) are a succession of calendars created and used for over two...

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...

timeline of Islamic history relates the Gregorian and Islamic calendars in the history of Islam. This timeline starts with the lifetime of Muhammad,...

and Muhammadan calendars (1901) pp. 373–5, 382–4. Dershowitz, Nachum; Reingold, Edward (2018). "Table 1.2 Epochs for various calendars". Calendrical Calculations...

incorporate as part of their daily Advent devotions. There are many variations of Advent calendars; some European villages create advent calendars on buildings...

260-day calendars are still used in the Guatemalan highlands, Veracruz, Oaxaca and Chiapas, Mexico. The importance of aboriginal calendars in ritual...

official calendar for civil holidays alongside the Gregorian calendar. Like other lunisolar calendars, the Hebrew calendar consists of months of 29 or 30...

A calendar is used to display dates and related information, usually in a table format. Calendars are used to plan future events and keep track of appointments...

Firefighter calendars are a type of decorative calendar that feature images of shirtless or scantily-dressed muscular men depicted as firefighters. They...

added to the calendar as a corrective measure because the Earth does not orbit the Sun in precisely 365 days. Leap year List of calendars List of non-standard...

The public history of Gmail dates back to 2004. Gmail, a free, advertising-supported webmail service with support for Email clients, is a product from...

this article: Decree of the National Convention on the establishment of the Republican calendar Date converter for numerous calendars, including this one...

and Armenian calendars Turkish months Brack-Bernsen, Lis (2007). "The 360-Day Year in Mesopotamia". In Steele, John M. (ed.). Calendars and Years: Astronomy...

beginning the next. Calendars that have survived from ancient Egypt often characterise the days as either lucky or unlucky. Of the calendars recovered, the...

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...

lunisolar calendars. Most reforms for calendars have been to make them more accurate. This has happened to various lunar and lunisolar calendars, and also...

astronomy Other ancient Greek calendars The Roman, Julian, and Byzantine calendars, which succeeded them Attic Calendar Date Converter Hannah, Robert...