It is now the 21st century as of 2014. The Gregorian calendar’s years started in the year 1 A.D., and a century is defined as 100 years. The 21st century officially began on January 1, 2001, and it will last through December 31, 2100.
The Prime Meridian, which is situated at the Royal Observatory in Greenwich, England, saw the official start of the twenty-first century. The 20th century is said to have ended in the year 2000. Beginning on January 1, 2101, the 22nd century will begin.
The third millennium, or an era of 1000 years, began on January 1, 2001, along with a new century. The end of the third millennium is December 31, 3000.