What is another word for the Gregorian calendar?
Pronunciation: [ðə ɡɹɛɡˈɔːɹi͡ən kˈaləndə] (IPA) 
The Gregorian calendar, also known as the Western calendar or Christian calendar, is a widely used calendar system named after Pope Gregory XIII, who introduced it in 1582. It replaced the Julian calendar, which had been in use for over 1500 years. The Gregorian calendar is based on the solar year and consists of 365 days, with a leap year occurring every four years. Other synonyms for the Gregorian calendar include the modern calendar, the civil calendar, and the international calendar. It is considered the most widely used calendar system in the world, and its accuracy has been refined over the centuries through the use of astronomical observations and calculations.
