year (Gregorian)-day conversion

Conversion number between year (Gregorian) [a, y, or yr] and day [d] is 365.2425. This means, that year (Gregorian) is bigger unit than day.

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from day 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 day

precision	[info]
Decimal:	[!]
Exponential:

Calculation process of conversion value

1 year (Gregorian) = (exactly) `(31556952) / (86400)` = 365.2425 day
1 day = (exactly) `(86400) / (31556952)` = 0.0027379070069885 year (Gregorian)
? year (Gregorian) × `(31556952 ("s"/"year (Gregorian)")) / (86400 ("s"/"day"))` = ? day

High precision conversion

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

Decimal places: (0-800)

year (Gregorian)
Result in day:
?

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year (Gregorian) to day conversion chart

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

visual:

year (Gregorian)	day
0	0
10	3652.425
20	7304.85
30	10957.275
40	14609.7
50	18262.125
60	21914.55
70	25566.975
80	29219.4
90	32871.825
100	36524.25
110	40176.675

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Multiple conversion

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

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

Convert Year (Gregorian) to other unit:

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 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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