The General Roman Calendar indicates the days of the year to which the Roman Rite assigns liturgical celebrations of saints and "mysteries of the Lord" for observance everywhere............
... a traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the day as that saint's feast day. The system arose from the very early Christian custom of annual commemoration of martysr on the dates of their deaths, or birth into heaven, and is thus referred to in Latin as dies natalis ("day of birth").
Only variations from the General Roman Calendar for celebrations according to the Roman Rite are given here. The various Eastern Catholic Churches have completely different liturgical calendars, as do Latin Rite Catholics who use the Ambrosian and Mozarabic Rites.
The calendar for a diocese is typically based on a national calendar, such as those listed above, 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.
The calendar of a parish is based on the calendar of its diocese, but — in addition to the celebrations in the diocesan calendar — there are other celebrations, including the anniversary of the dedication of the parish church and the feast day of the principal Patron saint of the church, both of which are celebrated as Solemnities.
Other calendars
Each institute of consecrated life (religious institute or secular institute) also has its own calendar, with variations from the General Calendar.
Missale Romanum, editio typica tertia 2002, Libreria Editrice Vaticana
Liturgia Horarum iuxta ritum Romanum, editio typica altera 2000, Libreria Editrice Vaticana
An example is Ordo Missae Celebrandae et Divini Officii persolvendi secundum calendarium Romanum generale pro anno liturgico 2006 (Libreria Editrice Vaticana).
Martyrologium Romanum (Libreria Editrice Vaticana, 2001 ISBN 88-209-7210-7)
"Memoria S. Christophori, anno circiter 1550 in Calendario romano ascripta, Calendariis particularibus relinquitur: quamvis Acta S. Christophori fabulosa sint, antiqua inveniuntur monumenta eius venerationis; attamen cultus huius Sancti non pertinet ad traditionem romanam" – Calendarium Romanum (Libreria Editrice Vaticana 1969), p. 131.
"Celebrate Your Name Week is a holiday established in 1997 by which the first full week in March as a week for everyone world-wide to embrace and celebrate his or her name." This week is also a week to be reminded what "Name Days" are as well-