How many tropical year in 1 second? The answer is 3.1688765172731E-8. We assume you are converting between tropical year and second. You can view more details on each measurement unit: tropical year or second The SI base unit for time is the second. 1 tropical year is equal to 31556925.445 second. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between years and seconds. Type in your own numbers in the form to convert the units!
You may also want to find out how many days are between two dates on the calendar. Use the date calculatorto get your age in days or measure the duration of an event.
1 tropical year to second = 31556925.445 second
2 tropical year to second = 63113850.89 second
3 tropical year to second = 94670776.335 second
4 tropical year to second = 126227701.78 second
5 tropical year to second = 157784627.225 second
6 tropical year to second = 189341552.67 second
7 tropical year to second = 220898478.115 second
8 tropical year to second = 252455403.56 second
9 tropical year to second = 284012329.005 second
10 tropical year to second = 315569254.45 second
You can do the reverse unit conversion from second to tropical year, or enter any two units below:
The mean tropical year is defined as the period of time for the mean ecliptic longitude of the Sun to increase by 360 degrees. Since the Sun's ecliptic longitude is measured with respect to the equinox, the tropical year comprises a complete cycle of the seasons; because of the biological and socio-economic importance of the seasons, the tropical year is the basis of most calendars.
The International Union of Pure and Applied Chemistry and the International Union of Geological Sciences have jointly recommended using defining the annus, with symbol a, as the length of the tropical year in the year 2000:
a = 31556925.445 seconds (approximately 365.24219265 ephemeris days)
We default to using the Gregorian year on this site, but you can select a specific type of year by entering the full name like "tropical year".
The second (symbol s) is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.
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