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The 21st century is the current century in the Anno Domini or Common Era, in accordance with the Gregorian calendar. It began on 1 January 2001 and will end on 31 December 2100. It is the first century of the 3rd millennium.
The 21st Century Started in 2001. In 1999, the world was preparing for the New Year's party of a lifetime. The year number in the Gregorian calendar was about to tick over to 2000, supposedly ushering in not only the 21st century but also the 3rd millennium CE.
When does the decade start? Will the thirties begin in 2030 or 2031? After all, the 21st century began in 2001, and not in 2000.
It's the year 2100, and we're at the dawn of the 22nd century. Yep, that's what's coming next: the 22nd century. Its years will all* start with 21, proceeding up to the distant 2199. And as we all know, we're currently in the 21st century, but the years start with 20.
Jun 21, 2024 · Based on Anno domini, the year numbering system we use today, the 21st century started on January 1, 2001. In this case, the year ends in a “1.” Why? Based on our numbering system, Anno domini, there is no year zero. The year 1 BC was not followed by 0, but rather by year AD 1, so we count up from the year 1 AD as in the “21st century.”
Dec 20, 1999 · Officially, the new millennium will begin at zero hour, Greenwich Mean Time (GMT), also referred to as Coordinated Universal Time (UTC), on January 1, 2001, according to rules adopted at an...
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Jul 20, 2018 · Under the Gregorian calendar, the 21st Century started on January 1, 2001. The date is fixed by the fact that there was no year zero. So every century within that calendar started on January 1, XX01.
