day (sidereal)-year (Gregorian) conversion

Conversion number between day (sidereal) [d (sidereal)] and year (Gregorian) [a, y, or yr] is 0.0027304313335088. This means, that day (sidereal) is smaller unit than year (Gregorian).

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from year (Gregorian) to day (sidereal) conversion

Enter the number in day (sidereal):

Decimal Fraction Exponential Expression

[d (sidereal)]

eg.: 10.12345 or 1.123e5

Result in year (Gregorian)

precision	[info]
Decimal:	[!]
Exponential:

Calculation process of conversion value

1 day (sidereal) = `(86164.09053083288) / (31556952)` = 0.0027304313335088 year (Gregorian)
1 year (Gregorian) = `(31556952) / (86164.09053083288)` = 366.24250085606 day (sidereal)
? day (sidereal) × `(86164.09053083288 ("s"/"day (sidereal)")) / (31556952 ("s"/"year (Gregorian)"))` = ? year (Gregorian)

High precision conversion

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

Start value:	[day (sidereal)]
Step size	[day (sidereal)]
How many lines?	(max 100)

visual:

day (sidereal)	year (Gregorian)
0	0
10	0.027304313335088
20	0.054608626670176
30	0.081912940005264
40	0.10921725334035
50	0.13652156667544
60	0.16382588001053
70	0.19113019334562
80	0.2184345066807
90	0.24573882001579
100	0.27304313335088
110	0.30034744668597

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Multiple conversion

Enter numbers in day (sidereal) and click convert button.
One number per line.

Converted numbers in year (Gregorian):
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Details about day (sidereal) and year (Gregorian) units:

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.

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.

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	×10		[d (sidereal)]