On 2019-07-22 10:37, Alois Treindl wrote:

PS: The claim by Shanks, quoted in TZ for America/Fort_Nelson, that most of BC did not have DST in 1946 is correct.

On 22.07.19 12:24, Alois Treindl wrote:

...

Rule Vanc 1946 only - Oct 13 2:00 0 S

should be

Rule Vanc 1946 only - Sep 29 0:00 0 S

According to Victoria Daily Times, Saturday 28 September 1946.

Many parts of the state went back to standard time earlier in September, according to this article.

   Thanks for these sources!    However, the two sources are not consistent with each other,    The "Vancouver Daily Province" syas that Kelowna and Penticton    do not observe DST in 1946 while the "Victoria Daily Times" says    they both switch back on 1946-09-28 at midnight.    It also strikes me as strange that the switch back from DST    should happen at midnight when DST started with the traditional    jump from 02 to 03.    While the piece in the "Vancouver Daily Province" has local    details, the article in the "Victoria Daily Times" seems to    be a syndicated text.    Michael Deckers.

Thanks for tracking down those sources about Vancouver. I installed the attached proposed patch. It seems that we may also be missing data for Vancouver transitions in 1941 and 1922, so that patch also has some commentary about that.