## How many hours in a year?

## Hours in a year calculation

An hour is a unit of time measurement alongside second, minutes, and so on. It is abbreviated using the symbol h or hr. An hour can be written in relation to the other smaller measurement units. An example is the 3600 second that makes up an hour. It can also be, the sixty minutes in an hour. With a day, an hour is conventionally reckoned as 1/24 of a day. That is there are 24 hours in a day. Below are calculations that further illustrate how hours can be used to express a year.

Here, there are six calendar years to be considered. The years are Gregorian calendar year, leap year, mean year, Julian year, Sidereal year, and Tropical year. To start with, one calendar common year has 365 days. Therefore, there are (24*365) 8760 hours. One calendar leap year has 366 days and it only occurs every 4 years. One leap year has (24*366) 8784 hours. There is also the mean year with (365+1/4-1/100+1/400) 365.2425 days. Hence, it has (24*365.2425) 8765.82 hours.

Furthermore, there is the Julian calendar used in western societies before the adoption of the Gregorian calendar. The Julian year has 365.25 days. Which means there are (24*365.25) 8766 hours. The single earth’s rotation around the sun is called a sidereal year. It has 365.25636 days. Hence, there are (24*365.25636) 8766.15264 hours in the sidereal calendar year. Finally, the tropical year of which the Earth takes to complete a single cycle of the 4 seasons. With its 365.242189 days, it has (24*365.242189) 8765.812536 hours.

In conclusion, always find time out of the over 87 hundred hours of each year for things that make you feel happy to be alive.