To this day, Gregorian chant remains at the bedrock of the Latin mass, as well as the development of Western music overall. After the organist’s prelude and a hymn for the whole congregation ...

Easter’s changing date is an issue that began long before the Gregorian calendar (named after Pope Gregory XIII) was instituted in 1582. (The Julian calendar—named for Julius Caesar—was the ...

Easter is observed on the first Sunday following the Paschal full moon, which is the first full moon on or after the spring equinox. Since Western Christianity uses the Gregorian calendar ...