Missal and the Liturgy of the Hours. These are up to date when printed, but additional feasts may be added later. For that reason, if those celebrating the liturgy have not inserted into the books a note about the changes, they must consult the current annual publication, known as the "Ordo", for their country or religious congregation. These annual publications, like those that, disregarding the feasts that are obligatory in the actual church where the liturgy is celebrated, list only celebrations included in the General Calendar, are useful only for the current year, since they omit celebrations impeded because of falling on a Sunday or during periods such as Holy Week and the Octave of Easter. This distinction is made in application of the decision of the Second Vatican Council: "Lest the feasts of the saints should take precedence over the feasts which commemorate the very mysteries of salvation, many of them should be left to be celebrated by a particular Church or nation or family of religious; only those should be extended to the universal Church which commemorate saints who are truly of universal importance." Institutional and societal calendars National calendars Personal jurisdiction calendars Diocesan and parish calendars The calendar for a diocese is typically based on a national calendar, with a few additions. For instance, the anniversary of the dedication of the cathedral is celebrated as a solemnity in the cathedral church and as a feast in all the other churches of the diocese. The feast day of the principal patron saint of the diocese is celebrated as a feast throughout the diocese. See also Calendar of saints Institutional and societal calendars of the Roman Rite National calendars of the Roman Rite Personal jurisdiction calendars of the Roman Rite Ranking of liturgical days in the Roman Rite References Further reading External links Liturgical calendars of the Catholic Church Roman Rite Sacred places and times in Catholic canon law Catholic liturgical law