# year (common) to day (sidereal) conversion

Conversion number between year (common) [a, y, or yr] and day (sidereal) [d (sidereal)] is 365.99933691304. This means, that year (common) is bigger unit than day (sidereal).

### Contents [show][hide]

Switch to reverse conversion:
from day (sidereal) to year (common) conversion

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

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

Result in day (sidereal)

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

### Calculation process of conversion value

• 1 year (common) = (31536000) / (86164.09053083288) = 365.99933691304 day (sidereal)
• 1 day (sidereal) = (86164.09053083288) / (31536000) = 0.002732245387203 year (common)
• ? year (common) × (31536000  ("s"/"year (common)")) / (86164.09053083288  ("s"/"day (sidereal)")) = ? day (sidereal)

### High precision conversion

If conversion between year (common) to second and second to day (sidereal) is exactly definied, high precision conversion from year (common) to day (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 (common) to day (sidereal) conversion chart

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

visual:
year (common)day (sidereal)
00
103659.9933691304
207319.9867382608
3010979.980107391
4014639.973476522
5018299.966845652
6021959.960214782
7025619.953583913
8029279.946953043
9032939.940322174
10036599.933691304
11040259.927060434
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## Multiple conversion

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

Converted numbers in day (sidereal):
Click to select all

## Details about year (common) and day (sidereal) units:

Convert Year (common) to other unit:

### year (common)

Definition of year (common) unit: 365 d. The year commonly has 365 days (except the leap year)

Convert Day (sidereal) to other unit:

### day (sidereal)

Definition of day (sidereal) unit: ≈ 23 h, 56 min, 4.0916 sec. A sidereal day is the time needed for the Earth to rotate once around its axis so that the distant stars appear in the same position in the sky. This is ~4 minutes shorter than the solar day.

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