year (Gregorian)-month (synodic) conversion

Conversion number between year (Gregorian) [a, y, or yr] and month (synodic) [mo] is 12.368276838052. This means, that year (Gregorian) is bigger unit than month (synodic).

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from month (synodic) to year (Gregorian) conversion

Enter the number in year (Gregorian):

Decimal Fraction Exponential Expression

[a, y, or yr]

eg.: 10.12345 or 1.123e5

Result in month (synodic)

precision	[info]
Decimal:	[!]
Exponential:

Calculation process of conversion value

1 year (Gregorian) = `(31556952) / (2551442.890)` = 12.368276838052 month (synodic)
1 month (synodic) = `(2551442.890) / (31556952)` = 0.080852006556273 year (Gregorian)
? year (Gregorian) × `(31556952 ("s"/"year (Gregorian)")) / (2551442.890 ("s"/"month (synodic)"))` = ? month (synodic)

High precision conversion

If conversion between year (Gregorian) to second and second to month (synodic) is exactly definied, high precision conversion from year (Gregorian) to month (synodic) is enabled.

Since definition contain rounded number(s) too, there is no sense for high precision calculation, but if you want, you can enable it. Keep in mind, that converted number will be inaccurate due this rounding error!

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year (Gregorian) to month (synodic) conversion chart

Start value:	[year (Gregorian)]
Step size	[year (Gregorian)]
How many lines?	(max 100)

visual:

year (Gregorian)	month (synodic)
0	0
10	123.68276838052
20	247.36553676104
30	371.04830514157
40	494.73107352209
50	618.41384190261
60	742.09661028313
70	865.77937866365
80	989.46214704418
90	1113.1449154247
100	1236.8276838052
110	1360.5104521857

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Multiple conversion

Enter numbers in year (Gregorian) and click convert button.
One number per line.

Converted numbers in month (synodic):
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Details about year (Gregorian) and month (synodic) units:

Convert Year (Gregorian) to other unit:

year (Gregorian)

Definition of year (Gregorian) unit: = 365.2425 d average. As the common year has 365 days, the Gregorian calendar with leap years compensate the deviation from the real, astronomical year. According to this calendar, every 4th year is a leap year, except for every 100th. But every 400th is a leap year. This means that there are 97 leap years in 400 year period. So according to Gregorian's calendar, one year has 365 + 97/400 days (average). This is not a perfect approach, but in 1000 year period, the defiation is only 0.3 days compared to the astronomical year. In the year 1582 Gregorian replaced the Julian calendar.

Convert Month (synodic) to other unit:

month (synodic)

Definition of month (synodic) unit: ≈ 29.530589 days. Synodic month = Cycle time of moon phases (example, from fool moon to next fool moon). This period is not constant and it is longer than moon rotation around Earth (sidereal month), because moon and Earth moves together around the Sun.

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