# How many years is a decade: how to calculate it?

By Rebecca

## How many years is a decade?

How many years is a decade: Each century is divided into ten decades or ten years. Decades, like centuries, can span any ten-year period. However, on the Gregorian calendar, a decade begins with a year ending in one and ends with a year ending in zero. The 1990s, for example, started in 1991 and concluded in 2000. It is, nevertheless, more usual for people to begin and end their year one year early. The 1990s began in 1990 and ended in 1999 in this example.

## What is the origin of the term “decade”?

The word “decade” comes from the Greek ideas (ten), which means “a group of 10.”

The prefix dec- was often used by the Romans to indicate collections of ten elements, such as a decathlon, which is a collection of ten athletic tasks, or a decagon, which is a regular 10-sided polygon. The century (100 years) and the millennium (1000 years) are two more time divisions derived from Latin (1000 years).

In theory, any ten-year period is its own decade. The term “decade” is commonly used to refer to time periods based on the calendar year’s tenth digit. As a result, the “1980s” refers to the decade from 1980 to 1989.

The first decade of the Gregorian calendar refers to the period of time between 1–10 AD, the second decade to 11–20 AD, and so on because the Gregorian calendar begins on 1 AD (there is no year 0). The “nineties” refers to the years from 1990 to 1999 AD, while the “200th decade” refers to the years from 1991 to 2000 AD.

The term “decennial” refers to an event that occurs every decade. Similarly, a centennial event occurs every 100 years, while a millennial event occurs every 1000 years. For example, the United States government conducts a census every ten years. Every ten years, several high school and college reunions take place.

## What is a Decade and Why is It Called That?

Informally, the term “decade” became a part of English jargon in 1590. It’s mostly used to make a reference to something like clockwork in a century. For instance, the 1680s or 1930s, which refers to the period from 1680 to 1689.

Many years represent different periods in the Georgian calendar. Their schedule includes no zeros, meaning that if you’re talking about the 1850s, you’re talking about the years 1851 through 1860.

While deciding expressly a very long period in a century, the discrepancy between the Georgian schedule and the normal schedule can be seen. The eighties, for example, usually refer to the years 1980-1989. The 190th decade, on the Georgian calendar, falls between 1981 and 1990.

The use of a decade to signify ten years has made it possible for humanity to easily distinguish large historical events. People have been able to recognise specific previous events for many years, such as the 40s or 30s, which refers to the 1940s and 1930s, respectively.

## What makes a decade ten years long?

The word decade comes from the Greek word “dekas,” which means “frequent assembly.” The Romans coined the term decade from the syllable dec, which they used to differentiate objects arranged in tens: for example, decathlon and decagon. The two terms represent a ten-item collection. As a result, the word dec-was incorporated into the timetable to represent a ten-year situation.

### The Importance of a Decade

Almost all historical events are separated into decades, making it easier for people to discern between events that occurred at different times in the past. Aside from historical events, a person’s age can be divided into decades.

There are two methods for calculating a decade.

One theory or method for computing the decade is that the start of the decade should be computed where the year-end is 0, such as 1890, while the decade end should be calculated where the year ends with the number 9.

As a result, the year ranges from 1980 to 1989. Similarly, the twenty-first century’s 2020 is the twenty-first century’s twenty-first century’s twenty-first century’s twenty-first century’s.

## WHAT IS THE DURATION OF A DECADE? WHAT IS THE DURATION OF A CENTURY?

• ONE CENTURY IS EQUAL TO TEN DECADES.
• A CENTURY IS THE SAME AS A 100-YEAR PERIOD.
• A DECADE IS THE SAME AS 0.1 CENTURY.
• A DECADE IS THE SAME AS A TEN-YEAR PERIOD.

• SIXTY SECONDS IN ONE MINUTE
• 60 MINUTES IN ONE HOUR
• 60 SECONDS x 60 MINUTES = 3,600 SECONDS
• A DAY IS MADE UP OF 24 HOURS
• 12 a.m. to 12 p.m.
• 12 hours from 12 a.m. to 12 a.m. = 24 hours
• 60 minutes = 1 hour
• 720 minutes = 12 hours x 60 minutes (am)
• 720 minutes = 12 hours x 60 minutes (pm)

28 days for the month of February

1 day = 1, 440 minutes

1,440 minutes x 60 seconds = 86, 400 seconds in a day

28 days x 1, 440 minutes = 40, 320 minutes in a month

40, 320 minutes for the month of February x 60 seconds = 2, 419, 200 seconds for 28days

## What about the 30-day months?

30 days for the month of April, June, September, November

1 day = 1, 440 minutes

1,440 minutes x 60 seconds = 86, 400 seconds in a day

30 days x 1, 440 minutes =43, 200 minutes in a month

April, June, September, November = 120 days

120 days x 1,440 minutes = 172, 800 minutes in 4 months

43, 200 minutes in a month x 4 = 172, 800

172, 800 minutes for 4 months x 60 seconds = 10, 368, 000 seconds for 120 days

## What about the 31-day months?

31 days for the month of January, March, May, July, August, October, December

1 day = 1, 440 minutes

1,440 minutes x 60 seconds = 86, 400 seconds in a day

31 days x 1,440 minutes = 44, 640 minutes in a month

January, March, May, July, August, October, December

217 days x 1, 440 minutes = 312, 480 minutes in 7 months

44,640 minutes in a month x 7 = 312, 480

312, 480 minutes for 7 months x 60 seconds = 18, 748, 800 seconds for 217 days

Let us shorten it. In a Year it has 365 days (12 months)

365 days x 1440 minutes = 525, 600 minutes

525, 600 minutes x 60 seconds = 31, 536, 000

## How can I figure out how many years make up a decade?

Decade = years divided by 10

1 year is equivalent to 0.1000664383561 Decade

0.1000664383561 multiply by 10 = 1 Decade

1 year has 525, 600 minutes x 10 years or 1 Decade = 5, 256, 000 minutes

5, 256, 000 minutes x 60 = 315, 360, 000 seconds for a decade

Consider how long those moments lasted.

You just must be grateful if you survived those seconds, minutes, hours, days, years, and decades. Always remember that every second counts since being up every morning is a huge blessing.

Centuries = years divided by 100

Century is equivalent to 100 years

If a year has 365 days or 12 months

365 days x 1440 minutes = 525, 600 minutes

525, 600 minutes x 60 seconds = 31, 536, 000

And a decade is equivalent to 10 years

1 year is equivalent to 0.1000664383561 Decade

0.1000664383561 multiply by 10 = 1 Decade

1 year has 525, 600 minutes x 10 years or 1 Decade = 5, 256, 000 minutes

5, 256, 000 minutes x 60 = 315, 360, 000 seconds for a decade

1 decade is equivalent to 0.1 centuries it simply means we need to multiply to achieve 100 years or a century.

10 years (decade) multiply by 10 = 100 years or a century

It takes ten decades to form a century or a hundred years

If a year has 365 days or 12 months

365 days x 1440 minutes = 525, 600 minutes

525, 600 minutes x 60 seconds = 31, 536, 000

And a decade is equivalent to 10 years

1 year is equivalent to 0.1000664383561 Decade

0.1000664383561 multiply by 10 = 1 Decade

1 year has 525, 600 minutes x 10 years or 1 Decade = 5, 256, 000 minutes

5, 256, 000 minutes x 60 = 315, 360, 000 seconds for a decade

5,256,000 minutes of a decade multiply by 10 = 52, 560, 000 minutes for a century

52, 560, 000 minutes x 60 = 3, 153, 600, 000 seconds for a century

Just simple as in a year it has 525,600 minutes x 100 years = 52, 560, 000 minutes

By Rebecca
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Rebecca is an Independent content writer for breldigital, She writes content on any given topic. She loves to write a case study article or reviews on a brand, Be it any topic, she nails it