September 2025

This Ordo provides a calendar for the liturgical year to aid those saying the Benedictine Office for those familiar with the rubrics of the Benedictine Office.  It can be used in conjunction to the Quick start guide to the Monastic Diurnal.

Those less familiar with the Office, or looking for other supporting material, should consult the more detailed version of this Ordo available through Lulu, the How to say the Benedictine Office notes on the Saints Will Arise blog.

In addition, an English translation of the rubrics can be obtained from Libri Sancti Press.

 ABBREVIATIONS

Com: Commemoration (used for either a feast rated as a memorial, or where a feast or other day displaces another feast or day (such as during Advent and Lent). 

Default collect: The collect used at all hours other than Prime and Compline (which have their own fixed collect), except where displaced by a feast or higher level day. 

 ff: And following pages.

 L&V: Lauds and Vespers

 MD: Monastic Diurnal (St Michael’s, Farnborough editions 2005 - ). 

 

SEPTEMBER 2025

  

Twelfth week after Pentecost/Fifth week of August. 

Ordinary of time throughout the year (in the psalter section), default collect, MD 472*. 

Monday 1 September Class IV. 

Tuesday 2 September Class IV. 

Wednesday 3 September St Pius X, Class III, MD [258]. 

Thursday 4 September Class IV. 

Friday 5 September – Class IV. 

Saturday 6 September – Class IV; of Our Lady. 1 Vespers of the 1st Sunday of September/13th after Pentecost, MD 452-3* & 473*.

Thirteenth week after Pentecost/First week of September. 

Ordinary of time throughout the year (in the psalter section), default collect, MD 473*. 

Sunday 7 September Thirteenth Sunday after Pentecost/First Sunday of September, Class II, MD 472-3*. 

Monday 8 September Nativity of the Blessed Virgin Mary, Class IIMD [259] ff. 

Tuesday 9 September – Class IV; com of St Gorgonius at Lauds, MD [264-5]. 

Wednesday 10 September Class IV. 

Thursday 11 September Class IV; com of SS Protus and Hyacinth at Lauds, MD [265]. 

Friday 12 September Class IV. 

Saturday 13 September of Our Lady, Class IV. 1 Vespers of the Exaltation of Holy Cross: MD [265] ff (no com of the Sunday). 

Fourteenth week after Pentecost/Second week of September. 

Ordinary of time throughout the year (in the psalter section), default collect, MD 473-4*. 

Sunday 14 September Exaltation of Holy Cross, Class II, MD [266] ff. No com of the Sunday. 

Monday 15 September Seven Sorrows of the BVM, Class III, MD [273] ff. 

Tuesday 16 September Class IV; com of SS Cornelius and Cyprian at Lauds, MD [278]. 

Wednesday 17 September Class IV; com of St Hildegard at Lauds, MD [278-9]. 

Thursday 18 September – Class IV. 

Friday 19 SeptemberClass IV. 

Saturday 20 September Class IV; of Our Lady. 1 Vespers of the 3rd Sunday of September/15th after Pentecost, MD 453-4* & 474-5*.

Fifteenth week after Pentecost/Third week of September. 

Ordinary of time throughout the year (in the psalter section), default collect, MD 474-5*. 

Sunday 21 September Fifteenth Sunday after Pentecost/3rd Sunday of September, Class II, MD 474-5*; Com of St Matthew at Lauds, MD [279]. 

Monday 22 September – Class IV; com of St Maurice at Lauds, MD [280]. 

Tuesday 23 September Class IV; com of St Linus at Lauds, MD [280-1]. 

Wednesday 24 September Ember Day, Class II, MD 454*. 

Thursday 25 September – Class IV. 

Friday 26 September Ember Day, Class II, MD 455*. 

Saturday 27 September Ember Day, Class II, MD 456*; com of SS Cosmas and Damian at Lauds, MD [281]. 1 Vespers of the 4th Sunday of September/16th after Pentecost, MD 456-7* & 475*. 

Sixteenth week after Pentecost/Fourth week of September. 

Ordinary of time throughout the year (in the psalter section), default collect, MD 475*. 

Sunday 28 September Sixteenth Sunday after Pentecost/4th Sunday of September, Class II, MD 475-6*. 1 Vespers of St Michael, MD [282] ff with a com of the Sunday.

 Monday 29 September The Dedication of St Michael the Archangel, Class I, MD [284] ff. 

Tuesday 30 September St Jerome, Class III, MD [290]. 

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