The calendar in current use, with normal years that are 365 days long, with leap years every fourth year except for years that are divisible by 100 but not by 400.
the calendar introduced by Pope Gregory XIII in 1582 to replace the Julian calendar; the calendar now used as the civil calendar in most countries. Every year that is exactly divisible by four is a leap year, except for centurial years, which must be exactly divisible by 400 to be leap years. Thus 2000 is a leap year, but 1900 and 2100 are not leap years.
The modern calendar in which every year divisible by 4 (excepting century years) and every century year divisible by 400 are bissextile (or leap) years with 366 days. All other years are common years with 365 days. The average length of this year is, therefore, 365.242,5 days which aggrees very closely with the length of the tropical year (the period of changes in the seasons). The Gregorian calendar was introduced by Pope Gregory in 1582, and immediately adopted by the Catholic countries in place of the Julian calendar previously in use. In making the change it was ordered that the day following October 4, 1582, of the Julian calendar be designated October 15, 1582, of the Gregorian calendar; the 10 days being dropped in order that the vernal equinox would fall on March 21. The Gregorian calendar was not adopted by England until 1752, but is now in general use throughout the world.
(gre·GO·ri·an CAL·en·dar). The Gregorian calendar, which serves as the most common calendar in use in the western world, has its basis in the solar year. A normal Gregorian year contains 365 days, but one orbit of the earth takes an extra 5 hours, 48 minutes, and 46 seconds to complete every year ( Zinberg 1963:29). If nothing were done to compensate for this extra 1/4 day every year, every 120 years the seasons would have shifted by one month. To adjust for this extra time accumulation the Julian calendar, adopted by Julius Caesar, added a 29th day to February every fourth year because a partial day could not be added every year. This extended the year to 366 days every four years, commonly known as a leap year. The Julian calendar also divided the year into 12 months that varied between 28 and 31 days.
The name given to the civil calendar now used in most countries of the world. It is the Julian calendar as reformed by the decree of Pope Gregory XIII in 1582. This reform omitted certain leap years and brought the length of the year on which the calendar is based nearer to the true astronomical value. It was designed to stay synchronous with the equinoxes.
A calendar in which normal years have 365 days, leap years have 366 days, and leap years are usually held every four years, but are not held in century years that are not divisible by 400. Instituted by Pope Gregory on October 15, 1582.
The most recent in the attempts to make the calendar year correspond to the natural year. The Gregorian calendar (instituted in 1582 by Pope Gregory XIII) corrected for the loss of one day every 128 years by dropping three leap years every 400 years. Century years were leap years only if evenly divisible by 400.
the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years; it was adopted by Great Britain and the American colonies in 1752
in 1582, Pope Gregory XIII reformed the Julian calendar to improve the accuracy. The current scheme for leap years was introduced, and 04 October 1542 (Julian calendar) was immediately followed by 15 October 1542 (Gregorian calendar) to correct for past errors. For consistency, and to avoid having a 10-day discontinuity, astronomers extrapolate the Gregorian calendar backward when dealing with historical dates. For more information, read the Gregorian Calendar page from Rice University.
A revision of the Julian calendar ordered by Pope Gregory XIII on February 24, 1582 via the papal bull Inter gravissimas. to correct cumulating errors which the feast of Easter to drift eariier and earlier in the year. This is the current civil calendar used by most of the world.
A modified form of the Julian calendar, introduced by Pope Gregory in 1582 to counteract discrepancies which had emerged between the tropical (i.e. seasonal) year and the calendar year. Adopted by different countries at different times. Introduced in Britain in 1752
The Gregorian calendar was introduced in 1582 by the Roman Catholic Church to replace the previously used Julian calendar. The Gregorian calendar (GC) incorporated the use of leap years so the vernal equinox would continue to fall on the same date over long time periods. The new calendar was immediately adopted in all Roman Catholic countries, however the rest of the world was slow to accept it.-------------------------------- Hades Hades is one of the eight hypothetical planets (also called the Transneptunian planets or TNPs) of the Hamburg School. Interpretations for Hades include: poverty, dirt, crime, sickness, and garbage. It is also associated with the ancient past and secrets.
A calendar based upon the Julian, but with a modification of some of that calendar's rules. It was introduced by Pope Gregory XIII in 1582 of this era, and is now used in the U.S.A. and most other countries of the world.
"new style" calendar adopted in Britain and her colonies in 1752. Resulted in a practice known as "double-dating," which is too complicated to explain in a line or two. See Julian calendar.
modification of the earlier Julian calendar in order to bring it into accord with astrological time and the true length of an earth year, devised under the direction of Pope Gregory and adopted by Catholic countries in the late 16th century, by England in 1752, and by Russia in 1918. More information here.
The calendar now used internationally, devised by Pope Gregory in the 1580s to replace the Julian calendar.
This is the calendar system we currently use. It has 365 days ever normal year, and 366 ever 4th year, a leap year. Leap years are divisible by 4, except when they are century years, except when that century is divisible by 4, except when it is a millennium year which is divisible by 4. (I had to learn this for Astro you know..) eg; 1996 - was a leap year (divisible by 4) 2000 - will be a leap year (divisible by 4, century divisible by 4, millennium not divisible by 4) 1900 - not a leap year (divisible by 4, but century not divisible by 4) 4000 - not a leap year (divisible by 4, century divisible by 4, but millennium divisible by 4) All of these "fine adjustments" to the calendar are to keep it in line with the Tropical year of 365.2422 days per year, which is the time between one vernal equinox and the next. This means that the seasons occur at the same time of year, kind of useful.
The calendar used in Europe and America. It is not universally accepted"for example, different calendar systems are often used in Japan, China, and the Middle East.