How many synodic month in 1 tropical year? The answer is 12.368266866496. We assume you are converting between synodic month and tropical year. You can view more details on each measurement unit: synodic month or tropical year The SI base unit for time is the second. 1 second is equal to 3.9193510432607E-7 synodic month, or 3.1688765172731E-8 tropical year. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between months and years. 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 synodic month to tropical year = 0.08085 tropical year
10 synodic month to tropical year = 0.80852 tropical year
20 synodic month to tropical year = 1.61704 tropical year
30 synodic month to tropical year = 2.42556 tropical year
40 synodic month to tropical year = 3.23408 tropical year
50 synodic month to tropical year = 4.0426 tropical year
100 synodic month to tropical year = 8.08521 tropical year
200 synodic month to tropical year = 16.17041 tropical year
You can do the reverse unit conversion from tropical year to synodic month, or enter any two units below:
A synodic month is the most familiar lunar cycle, defined as the time interval between two consecutive occurrences of a particular phase (such as new moon or full moon) as seen by an observer on Earth. The mean length of the synodic month is 29.53059 days (29 days, 12 hours, 44 minutes, 2.8 seconds). Due to the eccentricity of the lunar orbit around Earth (and to a lesser degree, the Earth’s elliptical orbit around the Sun), the length of a synodic month can vary by up to seven hours.
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".
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