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A system for naming days of the year, called calander dates.
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78 Calendar System topics matching:
Filter this Collection| x name | x image | x Days of year | x Days of week | x Months | x article |
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| x Gregorian calendar |
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May 1 | Sunday | April |
The Gregorian calendar is the internationally accepted civil calendar. It was first proposed by the Calabrian doctor Aloysius Lilius, and decreed by Pope Gregory XIII, after whom the calendar was named, on 24 February 1582 by the papal bull Inter...
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| January 15 | Tuesday | August | |||
| December 25 | Wednesday | December | |||
| First Tuesday following the first Monday in November | Thursday | February | |||
| January 1 | Friday | January | |||
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| x Islamic calendar |
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10th day of Dhul Hijja | Muharram |
The Islamic calendar or Muslim calendar or Hijri calendar (Arabic: التقويم الهجري; at-taqwīm al-hijrī; Persian: تقویم هجری قمری taqwīm-e hejri-ye qamari; Turkish: Hicri Takvim) is a lunar calendar based on 12 lunar months in a year of 354 or 355...
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| Sha'aban | |||||
| Rajab | |||||
| Safar | |||||
| Rabi' al-awwal | |||||
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| x Mayan calendar |
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The Maya calendar is a system of distinct calendars and almanacs used by the Maya civilization of pre-Columbian Mesoamerica, and by some modern Maya communities in highland Guatemala.
These calendars can be synchronized and interlocked, their...
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| x Iranian calendar |
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The Iranian calendar (Persian: گاهشماری ایرانی Gahshomari-ye Irani) can refer to any in a succession of a set of calendars. They are used for over two millennia in Iran (Persia), Afghanistan and related societies.
The current official Iranian...
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| x Julian calendar |
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The Julian calendar, a reform of the Roman calendar, was introduced by Julius Caesar in 46 BC, and came into force in 45 BC (709 ab urbe condita). It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed...
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| x Hebrew calendar |
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Nisan 14 | Shabbat | Kislev |
The Hebrew calendar (Hebrew: הלוח העברי ha'luach ha'ivri) or Jewish calendar is a lunisolar calendar used by Jews, and in recent decades, by a growing number of Christians. Today, the calendar is predominantly used for religious observances, but is...
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| Tenth of Tevet | Nisan | ||||
| Tisha B'Av | Adar | ||||
| 29th day of Elul | Shevat | ||||
| Iyar 28 | Iyar | ||||
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| x Chinese calendar |
The Chinese calendar is lunisolar, incorporating elements of a lunar calendar with those of a solar calendar. It is not exclusive to China, but followed by many other Asian cultures. It is often referred to as the Chinese calendar because it was...
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| x Babylonian calendar |
The Babylonian calendar was a lunisolar calendar with years consisting of 12 lunar months, each beginning when a new crescent moon was first sighted low on the western horizon at sunset, plus an intercalary month inserted as needed by decree. The...
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| x French Republican Calendar |
The French Republican Calendar or French Revolutionary Calendar was a calendar proposed during the French Revolution, and used by the French government for about 12 years from late 1793 to 1805, and for 18 days in 1871 in Paris.
The days of the...
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| x Soviet revolutionary calendar |
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The Soviet calendar added five- and six-day work weeks between 1929 and 1940 to the Gregorian calendar adopted by Russia in 1918. Although the traditional seven-day week was still recognized, a day of rest on Sunday was replaced by one day of rest...
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| x Golden numbers |
A golden number (sometimes capitalized) is a number assigned to each year in sequence to indicate the year's position in a 19-year Metonic cycle. They are used in the computus (the calculation of the date of Easter) and also in the Runic calendar....
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| x Runic calendar |
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The Runic calendar is a perpetual calendar based on the 19 year long Metonic cycle of the Moon.
Also known as a Rune staff or Runic Almanac, it appears to have been a medieval Swedish invention. Runic calendars were written on parchment or carved...
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| x Discordian calendar |
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The Discordian or Erisian calendar is an alternative calendar used by some adherents of Discordianism. It is specified on page 00034 of the Principia Discordia.
The Discordian year 1 YOLD is 1166 BCE. (Elsewhere in the Principia Discordia, it is...
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| x Tonalpohualli |
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The tonalpohualli, a Nahuatl word meaning "count of days", is a 260-day sacred period (often termed a "year") in use in pre-Columbian Mesoamerica, especially among the Aztecs. This calendrical period is neither solar nor lunar, but rather consists...
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| x Assyrian calendar |
The modern Assyrian/Aramaic calendar was introduced in the 1950s, loosely based on the historical lunisolar Babylonian calendar. The year begins with the first sight of Spring. Its era was fixed at 4750 BC. This was inspired by an estimate of the...
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| x Tamil |
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The Tamil calendar is used in Tamil Nadu, Kerala and Puducherry in India, and by the Tamil population in Malaysia, Singapore and Sri Lanka. It is used today for cultural, religious and agricultural events, with the Gregorian calendar having largely...
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| x Thai lunar calendar |
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The Thai lunar calendar (Thai: ปฏิทินจันทรคติ Patitin Chantarakati) (literally, Against-the-Sun Moon-Ways) is Thailand's version of the lunisolar Buddhist calendar used in the southeast Asian countries of Cambodia, Laos and Burma. Based on the third...
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| x Korean calendar |
The traditional Korean calendar is a lunisolar calendar which, like the traditional calendars of other East Asian countries, was based on the Chinese calendar. Dates are calculated from Korea's meridian, and observances and festivals are based in...
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| x Buddhist calendar |
The Buddhist calendar is used on mainland Southeast Asia in the countries of Cambodia, Laos, Thailand, Burma (officially known as Myanmar) and Sri Lanka in several related forms. It is a lunisolar calendar having months that are alternately 29 and...
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| x Hindu calendar |
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29 Ashwin |
The Hindu calendar used in ancient times has undergone many changes in the process of regionalization, and today there are several regional Indian calendars, as well as an Indian national calendar.
Most of these calendars are inherited from a system...
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| x Tibetan calendar |
The Tibetan calendar (lo-tho, ་ལོ་ཐོ) is a lunisolar calendar, that is, the Tibetan year is composed of either 12 or 13 lunar months, each beginning and ending with a new moon. A thirteenth month is added approximately every three years, so that an...
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| x Japanese calendar |
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On January 1, 1873, Japan adopted the Gregorian calendar, with local names for the months and mostly fixed holidays, but before 1873, a lunisolar calendar was in use, which was adapted from the Chinese calendar. Japanese eras are still in use.
Since...
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| x Bengali calendar |
The Bengali calendar (Bengali: বঙ্গাব্দ Bônggabdo or বাংলা সন Bangla Shôn) or Bangla calendar is a traditional solar calendar used in Bangladesh and India's eastern states of West Bengal, Assam and Tripura. The year begins on Pôhela Baishakh, which...
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| x Roman calendar |
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The Roman calendar changed its form several times in the time between the foundation of Rome and the fall of the Roman Empire. This article generally discusses the early Roman or 'pre-Julian' calendars. The calendar used after 46 BC is discussed...
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| x Javanese calendar |
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The Javanese calendar is a calendar still in use by the Javanese people of Indonesia concurrently with two other important calendars, the Gregorian calendar and the Islamic calendar. (The Gregorian calendar is the official calendar of the Republic...
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| x Attic calendar |
The Attic calendar is a hellenic calendar that was in use in ancient Attica, the ancestral territory of the Athenian polis. This article focuses on the 5th and 4th centuries BC, the classical period that produced some of the most significant works...
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| x Eastern Orthodox liturgical calendar |
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September 19 |
The Eastern Orthodox liturgical calendar describes and dictates the rhythm of the life of the Eastern Orthodox Church. It is also shared with minor variations by the Byzantine Catholic churches that recognize the Pope of Rome. Associated with each...
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| x 365-day calendar |
A 365-day calendar consists of exactly 365 days per year (no leap days), and is primarily used in computer models and as an assumption in every-day calculations. For example, a calculation of a daily rate may use an annual total divided by exactly...
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| x Berber calendar |
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The Berber calendar is the traditional calendar used by the Berber people of North Africa. This calendar is also known in Arabic under the name of عجمي ajamī "not Arabic" or فلاحي fellāḥī "agricultural"; it is employed to regulate the seasonal...
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| x Caspian calendar |
The Tabarian calendar is an indigenous Solar calendar of Mazandaranis.
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| x Bulgar calendar |
The Bulgar calendar was a calendar system used by the Bulgars, a seminomadic people, probably of Turkic descent, originally from Central Asia, who from the 2nd century onwards dwelled in the Eurasian steppes north of the Caucasus and around the...
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| x Ancient Bulgarian calendar |
The ancient Bulgarian calendar is based on observations of Jupiter (Yankul) and the Sun. Under the ancient Bulgarian calendar system, the year had 364 counted days and 1 uncounted day, totalizing 365 days. Every four years, an extra day was inserted...
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| x Yoruba calendar |
The Yoruba calendar (Kojoda) year starts from 3 June to 2 June of the following year. According to this calendar, the Gregorian year 2008 A. D. is the 10050th year of Yoruba culture. To reconcile with the Gregorian calendar, Yoruba people also...
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| x Cham calendar |
The Cham calendar (Cham language: sakawi) is a lunar calendar used by the Cham people of Vietnam since ancient times.
The length of the month: the full month has 30 days (Cham language: balan tapăk) and the hollow month has 29 days (Cham language:...
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| x Lunar calendar |
A lunar calendar is a calendar that is based on cycles of the moon phase. The only widely used purely lunar calendar is the Islamic calendar or Hijri calendar, whose year always consists of 12 lunar months. A feature of a purely lunar year, on the...
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| x Revised Julian calendar |
The Revised Julian calendar or, less formally, New Calendar, is a calendar scheme, originated in 1923, which effectively discontinued the 340 years of divergence between the naming of dates sanctioned by those Eastern Orthodox churches adopting it...
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| x Proleptic Gregorian calendar |
The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to dates preceding its official introduction in 1582.
The proleptic Gregorian calendar is explicitly required for all dates before 1582 by ISO 8601:2004 (4.3.2...
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| x Aztec calendar |
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The Aztec calendar, is the calendar system that was used by the Aztecs as well as other Pre-Columbian peoples of central Mexico. It is one of the Mesoamerican calendars, sharing the basic structure of calendars from throughout ancient Mesoamerica....
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| x Decimal calendar |
A decimal calendar contains either ten days per week, a multiple of ten days in a month, or ten months per year. Examples that have been adopted are the calendar of Romulus, the Egyptian calendar, the Alexandrian calendar, the Coptic calendar, the...
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| x Malayalam calendar |
Kerala is first mentioned (as Keralaputra) in a 3rd-century-BC rock inscription left by the Mauryan emperor Asoka the Great.[1] According to the first century annals of Pliny the Elder and the author of Periplus of the Erythraean sea, Muziris in...
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| x Calendar of saints |
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The calendar of saints is a traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the day as that saint's feast day. The system arose from the very early Christian custom of...
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| x Thai solar calendar |
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The Thai solar calendar, Suriyakati (Thai: สุริยคติ: Suriya plus kati : way) was adopted by King Chulalongkorn (Rama V) in 1888 as the Siamese version of the Gregorian calendar. It is the official calendar in Thailand, though Thai lunar calendar...
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| x Zoroastrian calendar |
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The Zoroastrian calendar is a religious calendar used by adherents of the Zoroastrian faith, and is an approximation of the tropical solar calendar. To this day, Zoroastrians, irrespective of geographic location, adhere to variations of this...
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| x Bahá'í calendar |
The Bahá'í calendar, also called the Badí‘ calendar, used by the Bahá'í Faith, is a solar calendar with regular years of 365 days, and leap years of 366 days. Years are composed of 19 months of 19 days each, (361 days) plus an extra period of ...
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| x Swedish calendar |
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The Swedish Calendar in use from 1 March 1700 until 30 February 1712 was one day ahead of the Julian calendar and ten days behind the Gregorian calendar. Easter was nominally calculated astronomically from 1740 to 1844.
In November 1699 it was...
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| x Haab' |
The Haab' is part of the Maya calendric system. It was the Maya version of the 365-day calendar known to many of the pre-Columbian cultures of Mesoamerica, which approximated the solar year.
The Haab' comprises eighteen "months" of twenty days each,...
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| x Pentecontad calendar |
The Pentecontad Calendar is a unique agricultural calendar system thought to be of Amorite origin in which the year is broken down into seven periods of fifty days, with an annual supplement of fifteen or sixteen days. Identified and reconstructed...
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| x Rapa Nui calendar |
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The Rapa Nui calendar was the indigenous lunisolar calendar of Easter Island. It is now obsolete.
William J. Thomson, paymaster on the USS Mohican, spent twelve days on Easter Island from December 19 to 30, 1886. Among the data Thomson collected...
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| x Tabular Islamic calendar |
The Tabular Islamic calendar (also called the Fatimid calendar) is a rule-based variation of the Islamic calendar. It has the same year numbers and months, but the months are determined by arithmetic rules rather than by observation or astronomical...
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| x Hellenic calendar |
The Hellenic calendar— or more properly, the Hellenic calendars, for there was no uniform calendar imposed upon all of Classical Greece— began in most Greek states between Autumn and Winter except the Attic calendar, which began in June. The Greeks,...
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| x Celtic calendar |
The term Celtic calendar is used to refer to a variety of calendars used by Celtic-speaking peoples at different times in history.
The Gaulish Coligny calendar is possibly the oldest Celtic solar/lunar ritual calendar. It was discovered in Coligny,...
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| x Taichuli calendar |
The Taichuli calendar was one of the most advanced calendars of Ancient China. It is based on the Qin calendar, stating that there were 365.25 days in a year and 29.53 days in a month. The creation of Taichuli was regarded as a revolution in the...
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| x Ethiopian calendar |
The Ethiopian calendar (Amharic: የኢትዮጵያ ዘመን አቆጣጠር yä'Ityoṗṗya zämän aḳoṭaṭär), also called the Ge'ez calendar, is the principal calendar used in Ethiopia and also serves as the liturgical calendar for Christians in Eritrea belonging to the Eritrean...
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| x Irish calendar |
The Irish calendar does not observe the typical astronomical seasons (beginning, in the Northern Hemisphere, on the equinoxes and solstices), or the meteorological seasons (beginning on March 1, June 1, September 1 and December 1). Rather, it...
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| x Tzolk'in |
Tzolk'in (in the revised Guatemala Mayan languages Academy orthography which is now preferred, formerly and commonly tzolkin) is the name bestowed by Mayanist scholars upon the version of the 260-day Mesoamerican calendar which was used by the Maya...
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| x Bikram Samwat |
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Vikram Samwat (Bikram Sambat, or Vikram Samvat, Devanagari:विक्रम संवत, abbreviated "V.S.") is the calendar established by Indian emperor Vikramaditya. It is a popularly used calendar in India and the official calendar of Nepal. In addition to...
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| x Germanic calendar |
The Germanic calendars were the regional calendars used amongst the Germanic peoples, with origins prior to the adoption of the Julian and later the Gregorian calendar.
The months were probably lunar; the Old English "mónaþ", Old Norse "mánaðr, and...
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| x 360 day calendar |
The 360-day calendar is a method of measuring durations used in financial markets and in computer models which is based on a simplification to a 360-day year, consisting of 12 months of 30 days each. To derive such a calendar from the standard...
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| x Aetos Kosmou |
Etos Kosmou (Greek: Έτος Κόσμου) was an early Byzantine and Roman Christian chronology system of measuring time introduced by Panodorus of Alexandria, Hippolytus of Rome, Sulpicius Severus, Annianus of Alexandria, George Syncellus, and others. It...
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| x Traditional Burmese calendar |
The traditional Burmese calendar is a lunisolar calendar based on both the phases of the moon and the motion of the sun. Within each month of the Burmese calendar, a major festival, often Burmese Buddhist in nature, is held. Despite its religious...
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