According to the calculation followed globally, a calendar year consists of 365 days. Each day, as we know or commonly regarded, is made up of 24 hours. Multiplying these two figures will give us a total of 8760 hours in a whole year.

Accordingly, the no. of total hours in each year varies.

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## What is a Gregorian year?

Named after Pope Gregory XIII, the Gregorian calendar was started in the year 1582. It houses leap years and therefore, the total no. of days is 365.2425.

During that time, the pope wanted to solve this because annually, the date of Easter celebration moved further away from the vernal equinox of the year before.

## What is a leap year?

In a leap year, the total no. of days in a year is 366. The extra day, when compared to a calendar year, is added in February. Therefore, in a leap year, the month of February has 29 days. A leap year is usually followed every four years.

## What is a sidereal year?

During a sidereal year, the total time taken by the Earth to revolve around the Sun once, in a calculation frame wherein the stars are taken as stationary.

## What is a tropical year?

Compared to sidereal year, a tropical year is calculated from equinox to equinox. The total no. of days in a tropical year is approximated to be 365.242189.

## How many hours in a year (common year)?

Hence, the total no. of hours in each year are as follows

1 Calendar year = 8760 hours

## How many hours in a tropical year?

1 Solar (or tropical) year =8765.812536 hours

## How many hours in a eclipse year?

1 Eclipse year =8318.88 hours

## How many hours in a lunar year?

1 Lunar year =8504.88 hours

## How many hours in a Gregorian year?

1 Gregorian year =8765.82 hours

## How many hours in a sidereal year?

1 Sidereal year =8766.15264 hours

## How many hours in a Julian year?

1 Julian year =8766 hours

## How many hours in a leap year?

1 Leap year =8784 hours

## How do you calculate hours in a year

The total no. of hours in a year is calculated by multiplying the no. of days with the total no. of hours in each day.

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## Conclusion

There are different types of years followed and the total no. of days in each year are as follows:

- Calendar year: 365 days
- Solar (or tropical) year: 365.242189 days
- Eclipse year: 346.62 days
- Lunar year: 354.37 days
- Gregorian year: 365.2425 days
- Sidereal year: 365.25636 days
- Julian year: 365.25 days
- Leap year: 366 days