Tickets :: Comment on [#13947] Calendar breaks on DST start date

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Comment	> Calendar views broken on DST start date (see attached). > > To reproduce: > 1 - set the timezone (php.ini) to one that has DST starting at 00:00 > of a known date. For example, date.timezone = "America/Sao_Paulo". > 2 - access the year or month view of the calendar on the month that > DTS starts (in this case, October) and look at the DST start date > > Interestingly, Android is plagued by almost the exact same bug: > https://code.google.com/p/android/issues/detail?id=74754 > > This is caused by using datetime variables with the time unset (thus > 00:00). There is no 00:00 on the DST start date (the clock "jumps" > from 23:59 to 01:00), so functions using that date return bad results > which are not handled properly. >
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