Liturgical & Sky Calendar

Perpetual General Roman Calendar computed in your browser for any year (Easter by the Gregorian Computus), with seasons, Sundays, solemnities, feasts, memorials, liturgical colours, the Sunday cycle (A/B/C) and weekday cycle (I/II), the day’s Mass readings from the bundled lectionary table, and moon phases, equinoxes, solstices and eclipses computed with Jean Meeus’s algorithms. No internet service is used.

Calendar: General Roman Calendar (ordinary form) with its precedence and transfer rules; national proper feasts are not included. Readings: lectionary references bundled from the Parola Viva open-data set (CC BY 4.0) and mapped to every year by liturgical day and cycle; psalms use liturgical (Greek/Vulgate) numbering. Always confirm with your diocesan Ordo.