From efele.net based on 2012c data
|Data from the file "zone.tab"
of the tz database
(ISO 3166-1 alpha-2)
|Comments||Eastern Time - Quebec - most locations|
|Other data from tz database|
|UTC offset DST
CA +4531-07334 America/Montreal Eastern Time - Quebec - most locations
The covered area is most of Quebec.
Relation to America/Toronto
On the 2013e release of the tz database, America/Montreal was one of the zones removed from zone.tab, but it is still available in the northamerica file. It was because the group maintaining the database "incorrectly thought that Montreal differed from Toronto in the early 1970s". The database primarily define zones that differ after 1970 (Unix time epoch), yet people might want to obtain Montreal's pre-1970 time changes, and linking America/Montreal to America/Toronto is not completely accurate. Thus, the decision was to keep this entry, pending a mechanism to winnow out zones like this to a new category.
- Eggert, Paul (5 September 2013). "[tz] Rules for TZ+ database". Retrieved 26 January 2014.