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| | Dominical letter - Wikipedia, the free encyclopedia |
 | | The days of the year are sometimes designated letters A, B, C, D, E, F and G in a cycle of 7 as an aid for finding the day of week of a given calendar date and in calculating Easter. |
 | | The Romans were accustomed to divide the year into nundinæ, periods of eight days; and in their marble fasti, or calendars, of which numerous specimens remain, they used the first eight letters of the alphabet to mark the days of which each period was composed. |
 | | This is expressed by saying that a leap year has two Dominical Letters, the second being the letter which precedes that with which the year started. |
| www.wikipedia.org /wiki/Dominical_letter (1482 words) |
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