Conversion number between year (Gregorian) [a, y, or yr] and month (Gregorian average) [mo] is 12. This means, that year (Gregorian) is bigger unit than month (Gregorian average).
Switch to reverse conversion:
from month (Gregorian average) to year (Gregorian) conversion
| [a, y, or yr] |
Result in month (Gregorian average)
?If conversion between year (Gregorian) to second and second to month (Gregorian average) is exactly definied, high precision conversion from year (Gregorian) to month (Gregorian average) is enabled.
Decimal places: (0-800)
year (Gregorian)| Start value: | [year (Gregorian)] |
| Step size | [year (Gregorian)] |
| How many lines? | (max 100) |
| year (Gregorian) | month (Gregorian average) |
|---|---|
| 0 | 0 |
| 10 | 120 |
| 20 | 240 |
| 30 | 360 |
| 40 | 480 |
| 50 | 600 |
| 60 | 720 |
| 70 | 840 |
| 80 | 960 |
| 90 | 1080 |
| 100 | 1200 |
| 110 | 1320 |
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 month (Gregorian average) unit: = 30.436875 d. Average Gregorian month is calculated from average Gregorian Year divided by 12 month: 365.2425 days / 12 months × 86400 sec ≈ 2.6297 Ms
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