Conversion number between year (Gregorian) [a, y, or yr] and year (mean tropical) [a, y, or yr] is 1.0000008476513. This means, that year (Gregorian) is bigger unit than year (mean tropical).
Switch to reverse conversion:
from year (mean tropical) to year (Gregorian) conversion
| [a, y, or yr] |
Result in year (mean tropical)
?If conversion between year (Gregorian) to second and second to year (mean tropical) is exactly definied, high precision conversion from year (Gregorian) to year (mean tropical) 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!
| Start value: | [year (Gregorian)] |
| Step size | [year (Gregorian)] |
| How many lines? | (max 100) |
| year (Gregorian) | year (mean tropical) |
|---|---|
| 0 | 0 |
| 10 | 10.000008476513 |
| 20 | 20.000016953025 |
| 30 | 30.000025429538 |
| 40 | 40.00003390605 |
| 50 | 50.000042382563 |
| 60 | 60.000050859075 |
| 70 | 70.000059335588 |
| 80 | 80.0000678121 |
| 90 | 90.000076288613 |
| 100 | 100.00008476513 |
| 110 | 110.00009324164 |
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.
Definition of year (mean tropical) unit: ≈ 365.242190402 d. Tropical year is the length of time it takes for the Sun to return to the same position in the cycle of seasons, approximately 365.24219 days
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