21st century

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 (MMI), and will end on 31 December 2100 (MMC). It is the first century of the 3rd millennium.

Extends: [21st century](https://wikipedia.org.ai/21st century), [3rd millennium](https://wikipedia.org.ai/3rd millennium), Centuries, [Contemporary history](https://wikipedia.org.ai/Contemporary history), [21st-century overviews](https://wikipedia.org.ai/21st-century overviews)