On 2015-07-30 15:11, Chris Walton wrote:
On Thu, Jul 30, 2015, at 14:21, Brian Inglis wrote:
In Canada, areas that do not change their GMT offset do change their time legally at the same time as the rest of North America, from CST to MDT or MST to PDT, etc. i.e. they observe the daylight saving time of the zone to the west. ;^>
Do you have a citation for this? It certainly doesn't seem to actually be true of the current implementation in tzdata.
I live in Indiana and people (before DST was adopted) would often _talk_ about being on central time or "chicago time" for half the year, but it wasn't actually true in any official sense.
Brian, Canadians living in one the areas where the clocks do not change often "believe" that they are switching time zones twice a year. I think I have posted comments about this in the past. However, the legislation (where it exists) says nothing about changing time zones in these areas. e.g. #1 from the Saskatchewan Time Act: "Time in eastern Saskatchewan and northeastern Saskatchewan: 6. Central standard time shall be used and observed throughout the year in eastern Saskatchewan and in northeastern Saskatchewan." e.g. #2 from the Quebec Time Act: "In the part of Québec east of the meridian of 63 degrees west longitude, the legal time is Atlantic Standard Time, which is four hours behind Coordinated Universal Time (UTC - 4 h)."
Just to add confusion, the Saskatchewan Time Act also says this: 8(2)(a) in the Battle River Time Option Area: (i) during the summer period, is central standard time; and (ii) during the winter period, is mountain standard time; and Yes; in this case the Time Act does refer to a change of time zones, however this for an area that does change its clocks twice a year!
I recalled some apparently legal expression, perhaps before 2007, which was succinctly phrased, preserving a distinction between standard and daylight time, while resulting in no change, perhaps for BC Peace River, SK, NU Southampton Island, or QC Minganie E/Golfe du St Laurent. OTOH, as you say, it may not have been actual legislative wording I recalled. -- Take care. Thanks, Brian Inglis