The 6:00 p.m. limit that Mr. Warawa refers to is the time that is normally used by the Journals Branch. To put it rather simplistically, a 48-hour notice essentially means two sleeps, a 24-hour notice means one sleep. I don't like to put things in such colloquial terms, but that is what it means. If the committee wishes, it may decide that the deadline is 1:00 p.m., but 6:00 p.m. is the deadline used by Journals Branch of the House of Commons. If you wish, you may decide that the deadline will be 1:00 p.m.
On December 14th, 2006. See this statement in context.