How many seconds are in a year?

It depends!

In a regular year there are
   31,536,000 seconds

In a leap year there are
   31,622,400 seconds

In a solar year there are
   31,556,926.08 seconds

In a sidereal year here are
   about 1000 seconds more than
   in a solar (or tropical) year.

Find more on the web.

