# year (Julian) to day conversion

Conversion number between year (Julian) [a, y, or yr] and day [d] is 365.25. This means, that year (Julian) is bigger unit than day.

### Contents [show][hide]

Switch to reverse conversion:
from day 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 day

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

### Calculation process of conversion value

• 1 year (Julian) = (exactly) (31557600) / (86400) = 365.25 day
• 1 day = (exactly) (86400) / (31557600) = 0.0027378507871321 year (Julian)
• ? year (Julian) × (31557600  ("s"/"year (Julian)")) / (86400  ("s"/"day")) = ? day

### High precision conversion

If conversion between year (Julian) to second and second to day is exactly definied, high precision conversion from year (Julian) to day is enabled.

Decimal places: (0-800)

year (Julian)
Result in day:
?

### year (Julian) to day conversion chart

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

visual:
year (Julian)day
00
103652.5
207305
3010957.5
4014610
5018262.5
6021915
7025567.5
8029220
9032872.5
10036525
11040177.5
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## Multiple conversion

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

Converted numbers in day:
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## Details about year (Julian) and day 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 Day to other unit:

### day

Definition of day unit: = 24 h = 1440 min. One day (solar day) is period of time from noon to noon = 24 hours. A solar day is the time it takes for the Earth to rotate about its axis so that the Sun appears in the same position in the sky. 24 [h] × 3600 [s] = 86.4 [ks] = 86400 [s]

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