Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Celerity

(47,712 posts)
4. the 21st century started on Jan 1, 2001 AD, not Jan 1, 2000 AD, as on Jan 1, 2000 AD only 1999 years had been completed
Sun Mar 24, 2024, 11:08 PM
Mar 2024

there was no year zero

and a century is 100 years long

the first 100 years AD ended when Dec 31 100 AD flipped over to Jan 1 101 AD

same goes for decades

the last year of the 1990s, for instance, was the year 2000 AD

and millenniums

the first 1000 years AD ended when Dec 31 1000 flipped over to Jan 1 1001 AD

Recommendations

0 members have recommended this reply (displayed in chronological order):

Latest Discussions»Region Forums»Massachusetts»Court upholds town bylaw ...»Reply #4