ABSTRUSE:
Both are correct.
2010 - 2019 (Decade)
2011 - 2020 (Decade)

There is no formal or legal rule to this effect.

statusquoante:
Yes it is.

How we count dates is quite different from how we count objects or things. You count objects by counting from one. Not so with dates.

For instance, a baby begins their first year on earth the day they are born. The day they clock 1 year old, they have already spent one year on earth and immediately they begin the 2nd year.

Similarly, by clocking 2020 today, we have already spent 2020 years. Today the 2021st year began.

So, indeed, a new decade has begun.

post=85401567:
Yeah, you can argue that the anno domini era begins with year 1 on the Gregorian calendar.

But, does anyone REALLY consider 1990 as part of the 80s decade?

We are calling 2020 the start of a new decade.
Which begins January 1st 2020 and ends on December 31st 2029.

From all of us @[b][/b] : Happy New Year 2020.

Issa new decade already!

lacreamieboie:
In 2000 we shouted Happy New Millennium. Why wasn't it end of a millennium. Think about it.

DMerciful:
Technically the unlimited continued progress of existence is constant, no difference between this second and the next cause it's man made! Time is constant !

internationalman:
we start counting from 1 to 10. and from 1 to 10 has ten numbers


so it should be 2021 to 2030

BeachLife:
Does a new day begin at 12am or 1am ? There you have your answer .

January 1 1990 to December 31 1999 is the 90s
January 1 2000 to December 31 2009 is the 2000s
January 1 2010 to December 31 2019 is the 2010s
January 1 2020 to December 31 2029 is the 2020s

but yea this is also correct in the grand scheme of things

heyjay:
Happy new year and welcome to 2020. But is it the start of a new decade? Opinions are divided on this matter, as many believe a decade counts from 1 to 10, since the Gregorian calendar has no year zero.

Proponents of a new decade believe we count decades from zero to nine. For instance, Andrew Novick, a scientist at the US National Institute of Standards and Technology tweets that "You wouldn't say that someone born in 1970 was from the sixties, would you?" So 60s as a decade mean a between 1960 and 1969.

Others in the middle believe that the argument is not necessary since a decade is simply "a period of 10 years". Which side of the divide are you? Is it #NewDecadeNewMe or just #HappyNewYear2020?

millionboi2:
Yes ...2010-2020 is decade in British language

lacreamieboie:
In 2000 we shouted Happy New Millennium. Why wasn't it end of a millennium. Think about it.

millionboi2:
Yes ...2010-2020 is decade in British language

Donsheddy:


Nah..
if a baby Is born we start counting from secs, minutes, hours, months before the baby gets to a year.......

2020 is the beginning of a decade ..

.we are already 2020 years, 12 hours 18 minutes and some seconds up. .. of existence

wwwihy:

Both are not correct...

The first is the correct one... For age, you don't count from 1 but zero.

It is not the day you were born, you became 1 year old but a year after.

nerd51:


Yeah, same way the years....look at it, when a first is born, it's in it's first year already, it just started counting down. It completing the 1 year means it's done with a year. So actually counting starts from 1. That also counts for the years.
I don't know if you understand what I'm trying to pass across