canonical hours
Concise Oxford English Dictionary © 2008 Oxford University Press:
canonical hours
▶plural noun
- 1 the times of daily Christian prayer appointed in the breviary, or the offices set for them (matins with lauds, prime, terce, sext, nones, vespers, and compline).
- 2 (in the Church of England) the time during which a marriage may lawfully be celebrated (usually between 8 a.m. and 6 p.m.).
'canonical hours' also found in these Oxford entries:

