The Holy Days of Obligation for the National Catholic Church on which all the Faithful are bound to hear, and all Priests to celebrate Holy Mass are:
| All Sundays of the year | ||
| January 1 | The Feast of the Circumcision | |
| Ash Wednesday | Day of Fasting and Abstinence | |
| March 1 | St David, Patron of Wales | |
| March 17 | St Patrick, Patron of Ireland | |
| March 19 | St Joseph | |
| April 23 | St George, Patron of England | |
| Maundy Thursday | ||
| Good Friday | Day of Fasting and Abstinence | |
| Feast of the Ascension of Our Lord | ||
| Feast of Corpus Christi | ||
| Feast of The Sacred Heart of Jesus | ||
| Feast of The Immaculate Heart of Mary | ||
| June 29 | St Peter and St Paul | |
| August 15 | The Assumption of the B.V. Mary | |
| September 24 | Our Lady of Walsingham, Patron of the National Catholic Church | |
| November 1 | All Saints | |
| November 30 | St Andrew, Patron of Scotland | |
| December 8 | Feast of the Immaculate Conception | |
| December 25 | Christmas Day |
NCC UK & Ireland 