(20th century - 21st century - 22nd century - other centuries)
Decades: 2000s 2010s 2020s 2030s 2040s 2050s 2060s 2070s 2080s
2090s In calendars based on the Christian Era or Common Era,
such as the Gregorian calendar, the 21st century is the current
century, as of this writing, lasting from 2001-2100. The 21st
century is the first century of the 3rd millennium (2001 -
3000). There was no year '0', so the first century began in year
1. See also . Despite this, common usage sometimes incorrectly
regards the 21st century as lasting from 2000 to 2099. Decades
are almost always considered as starting with the "0" year and
named accordingly ("2010s", etc.), so the first decade of a
century technically overlaps back into the preceding one.
Similar to the 20th century's place in popular culture as part
of names such as 20th Century Fox, the 21st century has been
used in the names of a number of companies and organizations.
The real estate firm Century 21 uses a name that refers to this
century. The 21st century has