General Roman Calendar computation: liturgical days, celebrations, ranks, precedence rules, and liturgical colors for any year — the liturgical calendar of the Catholic Church as a library.
Status: pre-release. This placeholder release contains no usable implementation. Romcal is an established open-source project maintained at romcal/romcal.
- The liturgical calendar for any year: seasons, weeks, and every celebration with its rank and precedence resolved per the General Norms for the Liturgical Year and the Calendar.
- Particular calendars (national, diocesan, proper) layered over the General Roman Calendar.
- Liturgical colors, psalter weeks, and the metadata that colors the lived day.
Apache-2.0.