The USCCB Committee on the Liturgy offers the following Holy Hours as models, based on the ritual book Holy Communion and Worship of the Eucharist Outside of Mass , which should be followed in all respects. A recently published resource of the USCCB Committee on the Liturgy entitled, Thirty-One Questions on Adoration of the Blessed Sacrament , may also be helpful.

Mass Times was developed in 1994, to help traveling Catholics in the USA find a nearby church with a schedule of religious services.  The information was collected from dioceses and parishes throughout the USA and made available by telephone at first, and then via the Internet in 1998.