Chronological Cycles for year 2025

The papal bull Inter gravissimas also includes six appendices, or “canons”, which were intended to explain the terms below:

These terms form the foundations of the year. Chronological signs, characteristic marks, and other unique church numbers found in old calendars are now considered obsolete. These terms were originally taken from the Julian calendar, but over time saw considerable updates, with many of their calculations modified (e.g. epacts, Dominical letters, the determination of Easter). For the remaining terms (Golden number, solar cycle, indictions) that are used in the Gregorian calendar, their relevance has waned over time, becoming less important. In foreign sources, only the first five terms are taken as the chronological cycles, while calculating moving holidays, such as Easter Sunday, can be derived from them. Below you can find the values for a given year for both calendars:

Year 2025
Golden number12
Solar cycle18

Julian calendar
Dominical letterF
Alexandrian epact1
Easter SundayApr 7
Easter Sunday
(in gregorian calendar)
Apr 20

Gregorian calendar
Dominical letterE
Gregorian epact0
Easter SundayApr 20