The calendar used by the ancient Romans before the Julian calendar: it consisted first of ten months, later twelve.
Webster's New World
Roman-calendar Sentence Examples
The Roman people refused him the honour of burial within the church of St Peter, but he now holds a place in the Roman calendar (May 16).
She was proclaimed a saint by the grateful German clergy; but her name has never found a place in the Roman calendar.
He restored the temple of Hercules and the Muses in the Circus Flaminius, placed in it a list of Fasti drawn up by himself, and endeavoured to make the Roman calendar more generally known.
Some things in the history of his last days, and in the indications of beatitude recorded, strongly recall the parallel history of the saints of the Roman calendar.
He has been claimed as a martyr, and as such his name is given in the Roman calendar and elsewhere, but his title to this honour is by no means proved, and he has been probably confused with another bishop of the same name.