Calculation of Easter Sunday online for year 1858
Item | Formula | Result |
---|---|---|
Golden number | gn = (year % 19) + 1 | 16 |
Julian epact | je = 11 × gn % 30 | 26 |
Century | ce = year / 100 + 1 | 19 |
Solar correction | sc = 3 × (ce - 16) / 4 | 2 |
Lunar correction | lc = 8 × (ce - 15) / 25 | 1 |
Gregorian epact | ge = (je - 10 - sc + lc) % 30 | 15 |
March date of Ecclesiastical full moon (Click here for show conversion table) | for ge <= 23: fm = 44 - ge | 29 |
for ge = 24: fm = 49 | ||
for ge = 25 and gn < 12: fm = 49 | ||
for ge = 25 and gn >= 12: fm = 48 | ||
for ge >= 26: fm = 74 - ge | ||
date of Ecclesiastical full moon | March 29 | |
Gregorian correction | gc = 10 + sc | 12 |
Day of week for Ecclesiastical full moon The number 0 is Sunday, 1 is Monday, and so on until 6, which is Saturday | dfm = (year + year / 4 - gc + fm) % 7 | 1 |
March date of the first Sunday after the Ecclesiastical full moon | es = fm + (7 - dfm) | 35 |
Easter Sunday falls on the first Sunday after the Ecclesiastical full moon | April 4 |
Gregorian epact | Ecclesiastical full moon |
---|---|
23 | March 21 |
22 | March 22 |
21 | March 23 |
20 | March 24 |
19 | March 25 |
18 | March 26 |
17 | March 27 |
16 | March 28 |
15 | March 29 |
14 | March 30 |
13 | March 31 |
12 | April 1 |
11 | April 2 |
10 | April 3 |
9 | April 4 |
8 | April 5 |
7 | April 6 |
6 | April 7 |
5 | April 8 |
4 | April 9 |
3 | April 10 |
2 | April 11 |
1 | April 12 |
0 | April 13 |
29 | April 14 |
28 | April 15 |
27 | April 16 |
26 | April 17 |
25/25 | April 17/18 |
24 | April 18 |
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