## Gregorian calendar year

1 calendar common year = 365 days

1 day = 24 hours

**1 common year = 365 (days/year) x 24 (hours/day) = 8760 hours.**

1 calendar leap year = 366 days

1 day = 24 hours

**1 leap year = 366 (days/year) x 24 (hours/day) = 8784 hours.**

## Julian year

1 julian year = 365.25 days

1 day = 24 hours

**1 julian year = 365.25 (days/year) x 24 (hours/day) = 8766 hours.**

## Sidereal year

1 sidereal year = 365.25636 days

1 day = 24 hours

**1 sidereal year = 365.25636 (days/year) x 24 (hours/day) = 8766,15264 hours.**

## Tropical year

1 tropiical year = 365.242189 days

1 day = 24 hours

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**1 Tropical year = 365.242189 (days/year) x 24 (hours/day) = 8765,81254 hours.**

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