Ns calendar dating

How does the nscalendar model a Gregorian calendar?

NSCalendar models the behavior of a proleptic Gregorian calendar ( as defined by ISO 8601:2004 ), which extends the Gregorian calendar backward in time from the date of its introduction. This behavior should be taken into account when working with dates created before the transition period of the affected locales.

What is an nscalendar object?

An encapsulation of calendar information and calculations that bridges to Calendar; use NSCalendar when you need reference semantics or other Foundation-specific behavior. NSCalendar objects encapsulate information about systems of reckoning time in which the beginning, length, and divisions of a year are defined.

Is nscalendar toll-free bridged?

NSCalendar is toll-free bridged with its Core Foundation counterpart, CFCalendar. See Toll-Free Bridging for more information on toll-free bridging. The Swift overlay to the Foundation framework provides the Calendar structure, which bridges to the NSCalendar class.

What calendars are used in different countries?

In Iran and Afghanistan, some locales use primarily the Persian calendar ( persian ). In Thailand, some locales use primarily the Buddhist calendar ( buddhist ). Other locales use another calendar alongside the Gregorian calendar.

How does the Gregorian calendar differ from the Julian calendar?

The Gregorian calendar improves the approximation made by the Julian calendar by skipping three Julian leap days in every 400 years, giving an average year of 365.2425 mean solar days long. This approximation has an error of about one day per 3,030 years with respect to the current value of the mean tropical year.

What is the Gregorian calendar used for?

The Gregorian calendar is the calendar used in most of the world. It is named after Pope Gregory XIII, who introduced it in October 1582. The calendar spaces leap years to make its average year 365.2425 days long, approximating the 365.2422-day tropical year that is determined by the Earths revolution around the Sun. The rule for leap years is:

How many months are there in the Gregorian calendar?

The Gregorian calendar, like the Julian calendar, is a solar calendar with 12 months of 28–31 days each. The year in both calendars consists of 365 days, with a leap day being added to February in the leap years.

What is an nscalendar object?

An encapsulation of calendar information and calculations that bridges to Calendar; use NSCalendar when you need reference semantics or other Foundation-specific behavior. NSCalendar objects encapsulate information about systems of reckoning time in which the beginning, length, and divisions of a year are defined.

What are the different calendars used around the world?

The previously mentioned Gregorian calendar is another notable calendar widely used around the world. This calendar replaced the Julian calendar, improving the accuracy of the years length by .002%. It was introduced by Pope Gregory XIII in the 16th Century AD.

How many days are there in a calender?

Calendar invented in the context of the absurdist or parody religion of Discordianism, Gregorian calendar variant with a year consisting of five 73-day seasons. Divides the year into four seasons. The Gregorian calendar with the era shifted by 10,000 years.

What calendar is used in China?

Officially, the country uses the Gregorian calendar although the Chinese calendar is used to celebrate holidays. 1. Other Notable Calendars with Widespread Usage The previously mentioned Gregorian calendar is another notable calendar widely used around the world.

Why do some countries have their own calendars?

There however are countries which have their own calendars for civil reasons. These countries completely rely on a completely different calendar, either alongside the Gregorian one or in entirety. Some of these civil calendars are a mere modification of the Gregorian calendar.