Does the Next Decade Start in 2020 or 2021?

We’ve only got a few more weeks until it’s 2020, which means it’s time to resuscitate this debate YET AGAIN:  When does a new decade actually start?

 

According to a new survey, 64% of people say the new decade starts on January 1st, 2020 and ends on December 31st, 2029.  But 17% say it starts on January 1st, 2021 and ends on December 31st, 2030.

 

The best argument for the 2021 start:  There was no year zero, so the first decade was 1 A.D. to 10 A.D.  The best argument for the 2020 start:  Come on, it’s obviously right. 

 

(YouGov)