How many seconds in a day?
Therefore the number of seconds in a day = 24×60×60 = 86400
How many seconds are in a 24 hour day?
Answer: 86400
Similarly
How many seconds in a year?
- One astronomical year of a single rotation around the sun has 365.25 days.
- One calendar common year has 365 days
Each day has 86400 seconds therefore number of seconds in a calender common year = 365×86400=31536000.
- One calendar leap year has 366 days (occures every 4 years)
Each day has 86400 seconds therefore number of seconds in a leap year = 366×86400=31622400.
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