the Gregorian calendar says my text book
Gregorian
The Gregorian calendar is the most widely used calendar system in the world today. It was introduced by Pope Gregory XIII in 1582 as a reform of the Julian calendar.
The Gregorian calendar is named after Pope Gregory XIII, who introduced it in October 1582 to reform the Julian calendar. The Gregorian calendar is the most widely used calendar system in the world today.
The Catholic Church, i.e. Pope Gregory, instituted the Gregorian Calendar. However, it is now the standard calendar that is recognised by nearly everyone, regardless of religion. I.e., today's date in the Gregorian Calendar is 12 July 2012.
It refers to the Gregorian calendar year that we use today as opposed to the ancient Julian calendar year
It is the Gregorian calendar which we use today
The name of Caesar's calendar was the Julian calendar. It was replaced in 1582 by the Gregorian calendar, which we used today.
The Julian calendar was used in most places that use the Gregorian calendar today, especially in countries considered "Christian". The switch to the Gregorian calendar, which is very similar but 25 times more accurate, began on October 15, 1582 (Gregorian date).
The most common calendar used internationally today is the Gregorian calendar, which is Pope Gregory XIII's 1582 reform of the Julian calendar. Some non-Christian countries use the Gregorian calendar for civil and/or international purposes and another calendar for religious/ internal use. This is because (a) the Gregorian calendar is considered a Christian calendar, since the numbering of its years is based on the wrongly calculated year of the birth of Jesus, and (b) many festivals are based on the phases of the moon, and the Gregorian is neither a lunar calendar, like the Islamic Hijra, nor a lunisolar calendar, like the Hebrew Luach.
The calendar used most widely today, the Gregorian calendar, was developed by Pope Gregory XIII in 1582. This calendar replaced the Julian calendar and is now the internationally accepted civil calendar.
Gregorian