Conversion number between year (Julian) [a, y, or yr] and lustre; lustrum is 0.20013698630137. This means, that year (Julian) is smaller unit than lustre; lustrum.
Switch to reverse conversion:
from lustre; lustrum to year (Julian) conversion
[a, y, or yr] |
Result in lustre; lustrum
?If conversion between year (Julian) to second and second to lustre; lustrum is exactly definied, high precision conversion from year (Julian) to lustre; lustrum is enabled.
Decimal places: (0-800)
year (Julian)Start value: | [year (Julian)] |
Step size | [year (Julian)] |
How many lines? | (max 100) |
year (Julian) | lustre; lustrum |
---|---|
0 | 0 |
10 | 2.0013698630137 |
20 | 4.0027397260274 |
30 | 6.0041095890411 |
40 | 8.0054794520548 |
50 | 10.006849315068 |
60 | 12.008219178082 |
70 | 14.009589041096 |
80 | 16.01095890411 |
90 | 18.012328767123 |
100 | 20.013698630137 |
110 | 22.015068493151 |
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.
Definition of lustre; lustrum unit: ≡ 5 years (of 365 d). A lustre is a period of five years. Its use dates back to Ancient Rome, when a lustrum was a five-year period at the end of which a full census of the Roman population would be carried out. = 5*365*86400 = 157.68 Ms
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