# Is December 31 2019 The End Of A Decade?

## Does the new decade start in 2021?

For others, the new decade doesn’t start until January 1, 2021; the old one concluding on December 31, 2020.

For a decade to begin, we must start with the year ending with 1 (2021) and finish with 10, or so far as chronology is concerned, a year ending in 0 (2030)..

## Why does the new decade start in 2021?

They say that because there was no Year Zero when the current era began more than 2,000 years ago, all decades, centuries and millenia begin with Year 1. “The next decade won’t start until Jan. 1, 2021,” Sandi Duncan, the managing editor of the Farmers’ Almanac, recently told NPR’s Morning Edition.

## How are decades counted?

The most widely used method for denominating decades is to group years based on their shared tens digit, from a year ending in a 0 to a year ending in a 9 – for example, the period from 1960 to 1969, the nineteen-sixties or 1960s, is one such grouping.

## Do decades end in 9 or 0?

Do Decades Begin with Round Years… Decades—periods of ten years—begin when the year count ticks over from a year ending with 9 to a year ending with 0. For example, New Year’s Day 1980 marked the beginning of the eighties.

## Why is 2019 the end of a decade?

If we go by the technically correct option, the decade will end after the end of the year 2020. Because, in the current Anno Domini system, there was no year 0. The current AD system was devised by a monk named Dionysius Exiguus. He had identified the birth year of Jesus Christ as 1, not 0.

## Why is 2020 not the end of the decade?

Or is that just fuzzy math? Many people argue the decade doesn’t truly end until after 2020. That’s because the dating system used by most countries around the world — the Gregorian calendar — tracks decades as beginning with 1, meaning the current decade would run from Jan. 1, 2011 to Dec.

## Is 2020 a new decade or is 2021?

So when your ninth birthday rolls around, you are starting your 10th year, which is then completed on your 10th birthday, when a new cycle begins. That means Dec. 31, 2019, is indeed the completion of the decade that started in 2010, and 2020 is the start of a new decade.

## Does the decade end in 2021?

So technically, it’s only been 2019 years since the year Dionysius determined was 1 A.D.—not 2020. That’s led some organizations, like the Farmers’ Almanac and the United States Naval Observatory, to favor a decade that begins in 2021 and ends in 2030. … “The definition of a decade really is just 10 years,” he said.

## Is 2019 the end of a decade?

The anno domini era, or the common era, begins with year 1 on the Gregorian calendar. … By that same logic, the first decade in the calendar was complete at the end of 10 CE, or 10 AD. Which means, according to the Farmers’ Almanac, that the end of this decade is December 31, 2020, not December 31, 2019.

## What decade ends in 2020?

The 2020s (pronounced “twenty-twenties”, shortened to “the ’20s”) is the current decade in the Gregorian calendar which began on 1 January 2020 and will end on 31 December 2029.