Origin of the work:
Comenius’ translation of an ecclesiastical calendar from Polish into Latin, and its amendment.
This is an index of ecclesiastical feast days and memorial days, sent by Comenius in September 1643 to the Swedish Bishop Johann Gothus Matthiae, as is noted in a letter of September 8th 1643 (in: A. Patera, J. A. Komenského korrespondence, Prague 1892, p76). The text is lost.
For further study, see also:
J. V. Novák & J. Hendrich, Jan Amos Komenský, jeho život a spisy. Prague 1932, p708