Almanac
Calendar and lunar tools β the computational side of the church year, after the manner of the old Calendar Explorer.
π Moon Phases
Every phase for a year with full and new moon dates, blue moons, and how the ecclesiastical "Paschal full moon" behind Easter compares with the astronomical sky.
Open βπ Date of Easter
Easter and every movable feast for a range of years, Western and Eastern side by side β with the years they coincide.
Open βπ Passover & the Paschal Moon
The spring full moon (14 Nisan) reconstructed astronomically β from the Exodus era to the present, on both calendars.
Open βπ Easter Statistics
Earliest and latest Easter, how often it falls on each date, and the years East and West agree.
Open ββ Movable Feasts
Every feast that moves with Easter β Septuagesima through Corpus Christi β for any year.
Open βπ Calendar Converter
Convert between the Julian and Gregorian calendars, with the Julian day number.
Open ββ Help & Guide
How each tool works β and a short history of why calculating Easter is so hard.
Open β