Brazil considering a common time zone
There is a proposal to have all of Brazil follow Brasilia's time zone. The proposal received a Senate committee approval on Tuesday, June 16, 2009, it is No 486, 2008 is available in PDF (and Portuguese) here: http://legis.senado.gov.br/mate/servlet/PDFMateServlet?s=http://www.senado.g... It will probably be debated, and there are no dates yet for when such a possible change will be observed from. We provide some background info about it here: http://www.timeanddate.com/news/time/brazil-one-time-zone.html Best regards, Steffen Thorsen - timeanddate.com
Greetings from Ottawa Can somone confirm if the UNTIL & TO dates provided in the tzfiles are all Gregorian dates? In particular, I believe that Serbia & Russia switched from the Julian calendar to the Gregorian calendar in 1918, and Greece in 1923, yet some dates recorded in the tzfiles for these locations span their switch of calendars. There may also be a similar issue with Alaska. When processing historical zones before a locations's conversion conversion to Gregorian calendar, should I be interpretting the provded dates as Julian dates, or Gregorian dates? Sincerely David Patte Relative Data, Inc.
[Sorry for posting on the wrong thread - I have resubmitted this on a new thread] Greetings from Ottawa Can somone confirm if the UNTIL & TO dates provided in the tzfiles are all Gregorian dates? In particular, I believe that Serbia & Russia switched from the Julian calendar to the Gregorian calendar in 1918, and Greece in 1923, yet some dates recorded in the tzfiles for these locations span their switch of calendars. There may also be a similar issue with Alaska. When processing historical zones before a locations's conversion to Gregorian calendar, should I be interpretting the provded dates as Julian dates, or Gregorian dates? Sincerely David Patte Relative Data, Inc.
On Sat, Jun 20, 2009 at 12:11:01PM -0400, David Patte wrote:
Can somone confirm if the UNTIL & TO dates provided in the tzfiles are all Gregorian dates?
The tzcode implementation only deals with the proleptic Gregorian calendar; it is considered outside the scope of the TZ "project" to deal with the idiosyncrasies of the transition from Julian (or any other calendar system) to Gregorian.
In particular, I believe that Serbia & Russia switched from the Julian calendar to the Gregorian calendar in 1918, and Greece in 1923, yet some dates recorded in the tzfiles for these locations span their switch of calendars. There may also be a similar issue with Alaska.
I can't speak to whether the cut-over dates in the tzdata are actually rendered correctly as Gregorian dates, but, because of the "Gregorian only" approach of the code, they _should_ be Gregorian. --Ken Pizzini
participants (3)
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David Patte -
Ken Pizzini -
Steffen Thorsen