# year (Julian) to month (sidereal) conversion

Conversion number between year (Julian) [a, y, or yr] and month (sidereal) is 13.3685137225. This means, that year (Julian) is bigger unit than month (sidereal).

### Contents [show][hide]

Switch to reverse conversion:
from month (sidereal) to year (Julian) conversion

### Enter the number in year (Julian):

Decimal Fraction Exponential Expression
 [a, y, or yr]
eg.: 10.12345 or 1.123e5

Result in month (sidereal)

?
 precision 0 1 2 3 4 5 6 7 8 9 [info] Decimal: Exponential:

### Calculation process of conversion value

• 1 year (Julian) = (31557600) / (2360591.5104) = 13.3685137225 month (sidereal)
• 1 month (sidereal) = (2360591.5104) / (31557600) = 0.074802631074606 year (Julian)
• ? year (Julian) × (31557600  ("s"/"year (Julian)")) / (2360591.5104  ("s"/"month (sidereal)")) = ? month (sidereal)

### High precision conversion

If conversion between year (Julian) to second and second to month (sidereal) is exactly definied, high precision conversion from year (Julian) to month (sidereal) 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!

### year (Julian) to month (sidereal) conversion chart

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

visual:
year (Julian)month (sidereal)
00
10133.685137225
20267.37027445001
30401.05541167501
40534.74054890001
50668.42568612501
60802.11082335002
70935.79596057502
801069.4810978
901203.166235025
1001336.85137225
1101470.536509475
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## Multiple conversion

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

Converted numbers in month (sidereal):
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## Details about year (Julian) and month (sidereal) units:

Convert Year (Julian) to other unit:

### year (Julian)

Definition of year (Julian) unit: = 365.25 d average. The basic calendar year has 365 days, but in fact the Earth needs a little more time around the sun. The Julian calendar compensated this with leap year (every fourth year had 366 days). According to the formula, a Julian year has 365 + 1/4 = 365.25 days. But even with this compensation, the astronomical year slip 0.78 days every 100 years into real seasons. Therefore, most countries have moved to the Gregorian calendar introduced in 1582.

Convert Month (sidereal) to other unit:

### month (sidereal)

Definition of month (sidereal) unit: ≈ 27.321661 days. "It is the time it takes the Moon to go around Earth measured from a fixed point. Sideric month is not completely constant, an average value has been used for calculating."

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