- The 21st Century Started in 2001 In 1999, the world was preparing for the New Year's party of a lifetime. The year number in the Gregorian calendar was about to tick over to 2000, supposedly ushering in not only the 21st century but also the 3rd millennium CE. However, the party was held one year too early—it should have been on January 1, 2001.
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The 21st ( twenty-first) century is the current century in the Anno Domini era or Common Era, under the Gregorian calendar. It began on January 1, 2001 ( MMI) and will end on December 31, 2100 (MMC). The 21st century is the first century of the 3rd millennium .
When does the 21st century start? When the last century turned, the general populace went with 1899 —> 1900 as their official transition and the intellectual establishment went with 1900 —> 1901 as theirs.
Orange Revolution in Ukraine. Boxing Day Tsunami occurs in Indian Ocean, leading to the deaths of 230,000. First surface images of Saturn 's moon Titan. The 2004 SuperFerry 14 bombing kills 116 people. Boston Red Sox wins the World Series for the first time since 1918, ending the Curse of the Bambino.
It's just much more common to call these time spans the 20th and 21st centuries—and they began in 1901 and 2001, respectively. You Can Celebrate Twice. So, in essence, both are correct. You only need to make sure that the year you state as the first year of a decade, century, or millennium matches the term you use to describe it.
The 21st century began on Jan 1st 2001 just as the 20th began on Jan 1st 1901. We start counting from year 1 and always have. It takes a hundred years to merit the label “century”. It follows then that the first century AD in the Gregorian calendar was from 1 to 100.
Mar 16, 1988 · The first century consisted of the years 1 through 100. The 20th Century consists of the years 1901 through 2000 and will end Dec. 31, 2000. The 21st Century will begin Jan. 1, 2001.”
This is the Century Timeline. 1st Century 0s (0-99) 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 90-99 2nd Century 100s (100-199) 100-109 110-119 120-129 130-139 140-149 150-159 160-169 170-179 180-189 190-199 3rd Century 200s (200-299) 200-209 210-219 220-229 230-239 240-249 250-259 260-269 270-279 280-289 290-299 4th Century 300s (300-399) 300-309 310-319 320-329 330-339 340-349 350 ...
- The Greatest Generation: (1901- 1924) They were considered great because they showed remarkable determination and resilience during the two wars and the depression years.
- The Silent Generation: (1925 – 1945) The Silent generation – also called the Traditionalists was a cohort born between 1925 and 1945 just after WWI and during WWII and the Greatest Depression.
- The Baby Boomer Generation: (1946 – 1964) The Baby Boomer birth years fell between 1946 and 1964, spanning an age range of 18 years. They were born at a time when WWII had just ended and there was a sense of hope in the US, in particular.
- Generation X: (1965 – 1979) The age range for Generation X lasted only 14 years, stretching between 1965 and 1979. Also called Baby Buster or Gen X, the cohort reversed the baby boom trend by registering low birth rates!