Calendar reform information

Calendar reform or calendrical reform is any significant revision of a calendar system. The term sometimes is used instead for a proposal to switch to...

without exception. The Gregorian reform shortened the average (calendar) year by 0.0075 days to stop the drift of the calendar with respect to the equinoxes...

Berbers). The Julian calendar was proposed in 46 BC by (and takes its name from) Julius Caesar, as a reform of the earlier Roman calendar, which was largely...

International Fixed Calendar (also known as the IFC, Cotsworth plan, the Cotsworth calendar and the Eastman plan) is a proposed calendar reform designed by Moses...

Indian national calendar, called the Shaka calendar or Śaka calendar, is a solar calendar that is used alongside the Gregorian calendar by The Gazette...

The World Calendar is a proposed reform of the Gregorian calendar created by Elisabeth Achelis of Brooklyn, New York in 1930. The World Calendar is a 12-month...

Academic term Calendar reform Common year Fiscal year ISO 8601 ISO week date Leap year Model year Tropical year Seasonal year "calendar year". Merriam-Webster...

proposals to start a new calendar at the same date had been put forward decades earlier. Cesare Emiliani's proposal for a calendar reform sought to solve a number...

fragmentary 2nd-century Coligny calendar. The Roman calendar was reformed by Julius Caesar in 46 BC. His "Julian" calendar was no longer dependent on the...

The traditional Chinese calendar (traditional Chinese: 農曆; simplified Chinese: 农历; lit. 'agricultural calendar'; informally traditional Chinese: 陰曆; simplified...

these books are organized by calendar dates, without reference to weekdays or year numbers. A goal of modern calendar reform has been to achieve universal...

Coligny calendar. Nevertheless, the Roman calendar contained very ancient remnants of a pre-Etruscan 10-month solar year. The Roman calendar was reformed by...

The Soviet calendar was a modified Gregorian calendar that was used in Soviet Russia between 1918 and 1940. Several variations were used during that time...

Augustan calendar reform have persisted, and the number of days in each month (except February) have remained constant since before the Julian reform. The...

sight of Spring. In the Julian calendar, the vernal equinox moved gradually away from 21 March. The Gregorian calendar reform restored the vernal equinox...

before and after a calendar change, respectively. Usually, they refer to the change from the Julian calendar to the Gregorian calendar as enacted in various...

subcontinent), Chinese calendars and Mesoamerican calendars. These are not specific calendars but series of historical calendars undergoing reforms or regional diversification...

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

The Pax calendar was invented by James A. Colligan, SJ in 1930, as a perennializing reform of the annualized Gregorian calendar. The common year is divided...

the seasons shifted about one day every four years), a reform of the ancient Egyptian calendar was introduced at the time of Ptolemy III (Decree of Canopus...

Agricultural cycle Calendar reform Dechristianisation of France Decimal time Soviet calendar Solar Hijri calendar, astronomical equinox-based calendar used in Iran...

The positivist calendar was a calendar reform proposal by Auguste Comte (1798–1857) in 1849. Revising the earlier work of Marco Mastrofini, or an even...

first month of the year until perhaps as late as 451 BC. After the calendar reform that added January and February to the beginning of the year, September...

pre-Julian calendars, it is often used inclusively of the Julian calendar established by the reforms of the Dictator Julius Caesar and Emperor Augustus in the...

Japanese mathematician in the middle of the Edo period, focused on calendar reform. The Yamaji family claimed to be descendants of Taira no Shigemori...

January 45 BC, by edict, Julius Caesar reformed the historic Roman calendar to make it a consistent solar calendar (rather than one which was neither strictly...

Hijri calendar (Arabic: ٱلتَّقْوِيم ٱلْهِجْرِيّ, romanized: al-taqwīm al-hijrī), or Arabic calendar also known in English as the Muslim calendar and Islamic...

The Hindu calendar, also called Panchanga (Sanskrit: पञ्चाङ्ग), is one of various lunisolar calendars that are traditionally used in the Indian subcontinent...