Specific calendars

The 53-week calendar is a variation of the Gregorian calendar that is used (mainly) in government and business for fiscal years, as well as in timekeeping. In this calendar, the year does not necessarily end on a specific day (e.g., January 31 or December 31). The year does, however, end on a day of the week (e.g., the last Friday in December). Therefore, weeks and months of equal length are allowed to exist. A year can have a total of 371 days. ...more on Wikipedia about "53-week calendar"

Astronomical year numbering is based on AD/BC / CE/BCE year numbering, but follows normal decimal integer numbering more strictly. Thus, it has a year 0 and the years before that are designated with a minus sign '−'. The era designations BC/AD are dropped. So the year 1 BC(E) is numbered 0, the year 2 BC(E) is numbered −1, and in general the year n BC(E) is numbered (1−n). The numbers of AD/CE years are not changed, but AD/CE is not used, being replaced by either no sign or a positive sign. For normal calculation a number zero is often needed, here most notably when calculating the number of years in a period that spans the epoch; the end years need only be subtracted from each other. ...more on Wikipedia about "Astronomical year numbering"

The Bahá'í calendar, common to the Bahá'í Faith, is a solar calendar with regular years 365 days long and leap years 366 days long as explained within the Kitáb-i-Aqdas. Years are composed of 19 months of 19 days each, plus an extra period of "Intercalary Days" (4 in regular and 5 in leap years) between the 18th and 19th months ( 26 February to 1 March). Years in the Bahá'í calendar begin at the vernal equinox (usually March 21 in the Gregorian calendar). Days begin at sunset on the previous solar day and end at sunset of the present solar day. ...more on Wikipedia about "Bahá'í calendar"

The Bangla calendar also known as Bangabda in the Bengali language, is the traditional calendar used in Bangladesh and Bangla (Bengali)-speaking regions of India. The calendar is based on the solar year. New Year's Day falls between 13 April and 15 April. ...more on Wikipedia about "Bangla calendar"

The Buddhist calendar is used on mainland southeast Asia in the countries of Cambodia, Laos, Thailand, and Myanmar (formerly Burma) in several related forms. It is a lunisolar calendar having months that are alternately 29 and 30 days, with an intercalated day and a 30-day month added at regular intervals. All of its forms are based on the original third century Surya Siddhanta, not its modern form (both forms are used by the various Hindu calendars). ...more on Wikipedia about "Buddhist calendar"

The term Celtic calendar is used to refer to a variety of calendars used by Celtic-speaking peoples at different times in history. ...more on Wikipedia about "Celtic calendar"

The Chinese calendar is a lunisolar calendar incorporating elements of a lunar calendar with those of a solar calendar. In China today, the Gregorian Calendar is used for most day to day activities, but the Chinese calendar is still used for marking traditional holidays such as Chinese New Year (Spring Festival), Duan Wu festival and the Mid-Autumn Festival, and in astrology, such as choosing the most auspicious date for a wedding or the opening of a building. Because each month follows one cycle of the moon, it is also used to determine the phases of the moon. ...more on Wikipedia about "Chinese calendar"

The Coptic calendar, also called the Alexandrian Calendar, is used by the Coptic Orthodox Church. It is based on the Ancient Egyptian calendar. To avoid the calendar creep of the latter, a reform of the Ancient Egyptian calendar was introduced at the time of Ptolemy III (Decree of Canopus, in 238 BC) which consisted in the intercalation of a 6th epagomenal day every fourth year. However, this reform was opposed by the Egyptian priests, and the idea was not adopted until 25 BC, when the Roman Emperor Augustus formally reformed the calendar of Egypt, keeping it forever synchronized with the newly introduced Julian calendar. To distinguish it from the Ancient Egyptian calendar, which remained in use by some astronomers until medieval times, this reformed calendar is known as the Coptic calendar. Its years and months coincide with those of the Ethiopian calendar but have different numbers and names. ...more on Wikipedia about "Coptic calendar"

The Discordian calendar is an alternative calendar used by some adherents of Discordianism. It is specified on page 00034 of the Principia Discordia. ...more on Wikipedia about "Discordian calendar"

The Ethiopian calendar or Ethiopic calendar is the principal calendar used in Ethiopia. It is based on the old Alexandrian calendar, which is the even older Egyptian calendar, but like the Julian calendar adds a leap day added every four years without exception, and begins the year on August 29 or August 30 in the Julian calendar. ...more on Wikipedia about "Ethiopian calendar"

The French Republican Calendar or French Revolutionary Calendar is a calendar proposed during the French Revolution, and used by the French government for about twelve years from late 1793. ...more on Wikipedia about "French Republican Calendar"

The golden numbers are number assigned to each year in sequence to indicate its position in a 19-year Metonic cycle. They are used in the calculation of Easter and also in the Runic calendar. ...more on Wikipedia about "Golden numbers"

The Gregorian calendar is the calendar that is used nearly everywhere in the world. A modification of the Julian calendar, it was first proposed by the Neapolitan doctor Aloysius Lilius, and was decreed by Pope Gregory XIII, for whom it was named, on 24 February 1582 (Note: The papal bull Inter gravissimas was signed in the year 1581 for unknown reasons, but printed on 1 March, 1582. Although the use of the date 1581 is often attributed to the supposed adoption by the papacy of a reckoning by which the year began on 25 March, other contemporaneous papal bulls have years that do not agree with March years, let alone years since a pope was named or other types of years.) Its years are numbered via the anno Domini era, beginning with the traditionally accepted year of Jesus' birth. ...more on Wikipedia about "Gregorian calendar"

The Maya Haab calendar is a 365-day solar calendar whose dates indicate the position of the Sun at noon relative to the zenith over the Yucatan peninsula. Most of the year, the Sun passes south of the zenith, but during a portion of the year it passes to the north. The foundation of the agrarian calendar, the Haab month names are based on the seasons and agricultural events. It is composed of nineteen 'months'. Eighteen of these months are 20 days long, while the last contains only five days, which are purported to be unlucky. The Haab is a vague year because it is a quarter-day short of an actual solar year, causing its first day to regress through all seasons. ...more on Wikipedia about "Haab"

My shortopedia is mine.

The Hindu calendar is of two types: ...more on Wikipedia about "Hindu calendar"

The Indian national calendar (sometimes called Saka calendar) is the official civil calendar in use in India. It is used, alongside the Gregorian calendar, by the Gazette of India, news broadcasts by All India Radio, and calendars and communications issued by the Government of India. ...more on Wikipedia about "Indian national calendar"

Indonesia uses many distinctive calendars: ...more on Wikipedia about "Indonesian calendars"

The Iranian calendar (also known as Persian calendar or the Jalaali Calendar) is a solar calendar currently used in Iran and Afghanistan. It is observation-based, rather than rule-based, beginning each year on the vernal equinox as precisely determined by astronomical observations from Tehran. ...more on Wikipedia about "Iranian calendar"

The Islamic calendar or Muslim calendar (also called "Hijri calendar", Arabic التقويم الهجري) is the calendar used to date events in many predominantly Muslim countries, and used by Muslims everywhere to determine the proper day on which to celebrate Islamic holy days. It is a lunar calendar having 12 lunar months in a year of about 354 days. Because this lunar year is about 11 days shorter than the solar year, Islamic holy days, although celebrated on fixed dates in their own calendar, usually shift 11 days earlier each successive solar year, such as a year of the Gregorian calendar. Islamic years are also called Hijra years because the first year was the year during which the Hijra occurred— Muhammad's emigration from Mecca to Medina. Thus each numbered year is designated either H or AH, the latter being the initials of the Latin anno Hegirae (in the year of the Hijra). ...more on Wikipedia about "Islamic calendar"

ISO 8601, " Data elements and interchange formats – Information interchange – Representation of dates and times" is an international standard for date and time representations. The signature feature of the ISO 8601 format is that all values are organized from most to least significant. This leads to the increasingly familiar YYYY-MM-DD hh:mm:ss format seen in international forums. ...more on Wikipedia about "ISO 8601"

(Japanese calendar) * 1948 - The following national holidays were introduced: New Year's Day, Coming-of-Age Day, Constitution Memorial Day, Children's Day, Autumnal Equinox Day, Culture Day, Labour Thanksgiving Day. ...more on Wikipedia about "Japanese calendar"

shortopedia Dreamteam. shortopedia

The Julian calendar was introduced in 46 BC by Julius Caesar and took force in 45 BC (709 ab urbe condita). It was chosen after consultation with the Alexandrian astronomer Sosigenes and was probably designed to approximate the tropical year, known at least since Hipparchus. It has a regular year of 365 days divided into 12 months, and a leap day is added to February every four years. Hence the Julian year is on average 365.25 days long. ...more on Wikipedia about "Julian calendar"

The traditional Korean calendar is directly derived from the Chinese calendar. Until the late nineteenth century Korea was a vassal state of China. In recognition of this relationship, the ruler of Korea would make a point of accepting the new Chinese calendar from the Emperor of China each year with great pageantry. The calendar had: ...more on Wikipedia about "Korean calendar"

Microsoft uses the Kuwaiti algorithm to convert between dates in the Western standard Gregorian calendar and dates in the Hijri or Islamic calendar. There is no fixed correspondence defined in advance between the Gregorian solar calendar and the Islamic lunar calendar, since the latter is defined by the visibility of the new moon by religious authorities and can therefore vary by a day or two, depending on the particular Islamic authority, weather conditions, and other variables. As an attempt to make conversions between the calendars somewhat predictable, Microsoft claims to have created this algorithm based on statistical analysis of historical data from Kuwait. However, its results are identical to a variation of the tabular Islamic calendar, which was introduced by Islamic astronomers around the eighth century. ...more on Wikipedia about "Kuwaiti algorithm"

Since there are about twelve lunations ( synodic months) in a solar year, this period (354.37 days) is sometimes referred to as lunar year, corresponding to thirteen sidereal months (355.18 days). ...more on Wikipedia about "Lunar year" Don't hesitate to contact stuff on shortopedia

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from the Shortopedia article about "Specific calendars".

MAIN PAGE MAIN INDEX CONTACT US