CCQ, r. 3 - Rules respecting the solemnization of civil marriages and civil unions

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2. Marriages and civil unions solemnized by a clerk or deputy clerk of the Superior Court or in a courthouse must be solemnized between 9:00 a.m. and 4:30 p.m. They may not be solemnized on
(1)  Sundays;
(2)  1 and 2 January;
(3)  Good Friday;
(4)  Easter Monday;
(5)  24 June, the National Holiday;
(6)  1 July, the anniversary of Confederation;
(7)  the first Monday of September, Labour Day;
(8)  the second Monday of October;
(9)  24, 25, 26 and 31 December;
(10)  the day fixed by proclamation of the Governor General for the celebration of the birthday of the Sovereign; or
(11)  any other day fixed by order of the Government as a public holiday or as a day of thanksgiving.
Marriages and civil unions solemnized by any other competent officiant under article 366 of the Civil Code elsewhere than in a courthouse must be solemnized between 9:00 a.m. and 10:00 p.m. and they may be solemnized on any day, including the days referred to in the first paragraph.
M.O. 2152-03, s. 2.