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The third millennium is the current millennium in the Common Era, spanning the 21st to 30th centuries. Learn about its futures studies, astronomical events, population growth, climate change, extinction, and more.
- 21st century, 22nd century, 23rd century, 24th century, 25th century, 26th century, 27th century, 28th century, 29th century, 30th century
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The 21st century started in 2001, not 2000, according to the Gregorian calendar. The web page explains why the year 2000 was one year too early and how different calendars use different year numbers. It also discusses the history and meaning of the year 0, the year 1 BCE, and the round number bias.
The 3rd millennium is the period of time from 2001 to 3000. Learn about the events, centuries and decades that will happen in this millennium, such as climate change, Easter dates and computer software issues.
Learn about the concept of millennium, a period of 1,000 years, and how it is measured by the Gregorian calendar. Find out when the 3rd millennium ad started and how it differs from the 2nd millennium.
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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