What is the length of a year in seconds put in scientific notation?

Answer 1

It depends on which definition of a year you want to use, there are at least 2 types of years:

-Solar year (calendar)

-Sidereal year (astronomical)

A solar year is 365 days, 5 hr, 48 min, 46 sec of mean solar time (see solar time), which is the basis fot the Gregorian calendar. This comes to 31,556,926 seconds which is based on the earth relative to the sun and not the stars. This is the answer shown by Google calculator.

Add about 1223 seconds to that for a sidereal year, which is closer to what the other replies show (Wikipedia shows several seconds less than the other replies at 31,558,149.54s and I'd go with that number since neither of the other answers here provides a valid source). The Sidereal year is based on the position of the earth relative to the stars other than our sun and is the measurement of a year preferred by astronomers for certain applications.

365 days in a year

24 hours ina day

60 minuits in an hour

60 seconds in a hour (multiply all)

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31536000 seconds in a year

3.1536 * 107