[Interest] Relashionship between time_t and QDateTime

Thiago Macieira thiago.macieira at intel.com
Tue Aug 27 21:42:09 CEST 2013

On terça-feira, 27 de agosto de 2013 22:59:44, Constantin Makshin wrote:
> Windows can store information about daylight saving transitions for past
> years, but always uses one for the current year. And since daylight
> saving transition dates and time tend to slightly drift from year to
> year, there's absolutely no guarantees of getting correct time
> conversion results; in general case 1-hour error is nearly inevitable.
> If you're on Windows, either calculate and apply DST yourself or forget
> about correct "UTC <-> local time" conversions.

This is not about the corner case of a file that was created in the hour of the 
transition, or even in the week that shifted between non-DST in one year to 
DST in another (or vice-versa).

>From what I understand, we're talking about a file created in DST and checked 
outside of DST (or vice-versa) in the *same* *year*.

Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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