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This site and program was created by the efforts of the late Laszlo Kiss. It was developed as his own work, and not representative of any official order, or the view or opinion of any group. Laszlo followed his sources as precisely as possible, and it has been the ongoing task of the Divinum Officium Project to correct errors. Such a project as this requires others to be involved in maintaining and continuing it, so we hope to improve what is offered here in the hope that many will pray the Divine Office in this way and make it their own. The code and data are available to anyone at the Divinum Officium Google Code repository.

Interesting links:

The Roman Breviary Yahoo group
The Divine Office, Ecclesiastical Latin, & Sacred Music Fish Eaters Traditional Catholic Forum
The divine Office Yahoo Group (Anglican)

Praying the Divine Office Download pdf
Corpus Christi Watershed Resources for Sacred Music and the Liturgy, including the St. Edmund Campion Missal and Hymnal
Liturgia Horarum Latin Download, read
Liturgia Horarum English Read, download


The source for the Latin text is the Microsoft-sponsored scanning of the Ratisbon 1888 edition of the Latin Breviarium Romanum by the University of St Michael's College, Toronto, which allows personal, educational and fair non-commercial use.

The sequence of the reference books in the above file is : hiemalis - aestiva - verna - autumnalis.

Laszlo Kiss adapted that text using his own copies of the following printed books:
  • Breviarium Romanum Hiemalis. Pustet (Regensburg, Germany), 1943
  • Breviarum Romanum Verna. Benziger Brothers (New York, USA) 1945 (new Psalter)
  • Breviarium Romanum Aestiva. Burns Oates & Washbourne (London, England) 1946
  • Breviarium Romanum Autumnalis. La Presse Catholique Panamericaine (Montreal, Quebec) 1943
For the Biblical passages, we have used the old Latin Vulgate text in the public domain.

Laszlo adapted some offices and the Latin and English psalter from David Siefker's excellent site, with the permission of the owner: http://stores.lulu.com/breviary

Laszlo used the Breviarium Monasticum. Dessain (Mechelen, Vlaanderen) 1953 4 volume edition for the Monastic version.

The Regula for the Latin is adapted from The Latin Library site.


For the English Biblical passages, we have used the Douai-Rheims English translation. A copy of this can be downloaded from http://www.gutenberg.org/etext/8300

The daily Martyrologium is adapted with the permission of the owner, David Forster. Unfortunately, his site is no longer available on the internet. This is the Benedict XIV (1749) version with additions. Since the English translation is taken from the Bute 1908 edition (see below), the Latin and the English texts do differ. The English version of the Martyrologium is not identical with the Latin. The English adds explanations and additional saints. Sometimes, the lections of the English and Latin are not identical in the sources. Both have been left as they are in the texts from which they are drawn.

The Regula for the English is adapted from The Online Library of Liberty site.

Laszlo adapted the English translation of the hymns (with the permission of Jeffrey Tucker) from the Musica Sacra (Church Music Association of America) website using their collection of the Hymns of the Breviary and Missal at http://musicasacra.com/pdf/hymnsofbreviary.pdf

Any other material in English is from the translation of the Breviary by John, Marquess of Bute, printed in 1908 and made available on the internet from their archive collection by the University of St Michael's College, Toronto with the same permission as for the Latin version:   Volume 1   Volume 2   Volume 3   Volume 4
The same collection also has a set of the same books without the quoted permission and apparently copyrighted.

We would like to thank Clare G. for help with the English text of the hymns.
We also would like to thank the many correspondents, including Timothy McCarthy and countless others, for their help in pointing out errata.
We thank New Catholic and the Rorate Caeli blog for their invaluable assistance upon the death of Laszlo Kiss, to ensure that the Divine Office might still be prayed online.
We thank, in the most profound way, the family of the late Laszlo Kiss, for permitting us to continue his work and devotion to the Church's liturgy.


For Hungarian Scriptures, Laszlo used the free-to-fair-use Katolikus Biblia

Since this translation is from the Nova Vulgata, the Psalms and Ecclesiasticus differ significantly from the Latin Vulgate or Douai-Rheims versions. For this site I have renumbered the New Vulgate psalms by adding Psalm 10 to Psalm 9, decreasing by one the numbering of each of the psalms between 11 and 147, and by creating 146 and 147 from the the psalm numbered 147 in the New Vulgate. Textual changes have been retained.

For the hymns in the Hungarian version, Laszlo used the translation available here.

Any other material in Hungarian is Laszlo's translation or adaptation from the above Bible.


For the Italian translation, we are very grateful to Don Camillo, who made available several rare resources, to Inter Multiplices Una Vox, who gave us permission to use the material on their web site, to ORA, LEGE et LABORA, who provided us with the Italian text of the Rule of St. Benedict, and to Fr. A.R. of Cantuale Antonianum, who posted a scan of the 1965 Latin Italian Missal.

laszlo kiss (+2011)

The Divinum Officium Project
canon DOT missae AT gmail DOT com


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