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In other words, the first year of the anno domini era was year 1, not year 0. As a consequence, and so on... So, at the end of year 1999, as people were celebrating the new millennium, only 1999 full years had passed since the beginning of the calendar era—which is one year short of two full millennia.
Dec 20, 1999 · December 20, 1999. 4 min read. When is the beginning of the new millennium? Some say it is January 1, 2000 and others January 1, 2001? Who is correct? The Sciences. The editors of...
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May 5, 2024 · Millennium, a period of 1,000 years. The Gregorian calendar, put forth in 1582 and subsequently adopted by most countries, did not include a year 0 in the transition from bc (years before Christ) to ad (those since his birth). Thus, the 1st millennium is defined as spanning years 1–1000 and the 2nd.
- The Editors of Encyclopaedia Britannica
The first millennium of the anno Domini or Common Era was a millennium spanning the years 1 to 1000 ( 1st to 10th centuries; in astronomy: JD 1 721 425.5 – 2 086 667.5 [1] ). The world population rose more slowly than during the preceding millennium, from about 200 million in the year 1 to about 300 million in the year 1000.
2000 was a century leap year starting on Saturday of the Gregorian calendar, the 2000th year of the Common Era (CE) and Anno Domini (AD) designations, the 1000th and last year of the 2nd millennium, the 100th and last year of the 20th century, and the 1st year of the 2000s decade.
The first millennium began on 1 January AD 1; the second millennium began on 1 January 1001; the third millennium will therefore begin on new year's day 2001. Years are grouped in tens, starting with one and ending with ten, for there was no year zero.
Those holding that the arrival of the new millennium should be celebrated in the transition from 2000 to 2001 (i.e., December 31, 2000, to January 1, 2001) argued that the Anno Domini system of counting years began with the year 1 (there was no year zero) and therefore the first millennium was from the year 1 to the end of the year 1000, the ...
