Below is the list of diocesan liturgical calendar of Bishop William T. McGrattan. Unless otherwise noted, the liturgies or prayers are led by Bishop McGrattan. Note that the schedule is subject to change. If you have any questions, please contact the Office of Liturgy at 403-218-5511 or 403-218-5524, or e-mail email@example.com
- January 18 - Week of Prayer of Christian Unity - Ambrose University at 11 AM.
- January 19 - School Blessing - Guardian Angels School (CCSD). Fr. Jerome Lavigne presiding.
- January 21 - Relic Pilgrimage of St. Francis Xavier - Mass and Sung Vespers at St. Albert the Great.
- January 21 - School Blessing - Apostles of Jesus (CCSD). Fr. Jerome Lavigne presiding.
- January 25 - Week of Prayer of Christian Unity - St. Joseph's Church, Calgary at 7 PM. Fr. Yaroslaw Dziuba presiding.
- January 28 - Parish Closing - Our Lady of the Rockies, Canmore.
- February 14 - Ash Wednesday Mass at St. Mary's Cathedral, Calgary
- February 17 - Rite of Election - St. Mary's Cathedral, Calgary at 7:30 PM
- February 18 - Mass for Mark Drapal's Admission to the Ministry of Acolyte, St. Cecilia, Calgary at 9 AM.
- February 18 - Rite of Election - St. Mary's Cathedral, Calgary at 3:30 PM
- February 20 - Faith Day - Christ the Redeemer School Disrict
- March 24 - Acies Legion of Mary - Mass at St. Patrick, Calgary
- March 26 - Chrism Mass at 7:30 PM - St. Mary's Cathedral, Calgary
- March 29 - Holy Thursday at St. Mary's Cathedral, Calgary
- March 30 - The Outdoor Way of the Cross at St. Mary's Cathedral, Calgary
- March 30 - Good Friday at St. Mary's Cathedral, Calgary
- March 31 - Easter Vigil at St. Mary's Cathedral, Calgary
- April 1 - Easter Sunday at St. Mary's Cathedral, Calgary
- May 27 - Feed the Hungry Blessing at the Garden
- Date to be determined - World Migrants Mass