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

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Comment	> Sorry, I failed to note that the (windows) client timezone should be > set to a DST timezone (in my case, (UTC-3:00) Brasilia), and I'm > using Firefox 37.0.1. > > The calendar uses javascript functions from the browser, but the > building of the calendar view is coming from Kronolith (for example > kronolith.js, updateView for the large calendar view). > > So it seems in some js implementations, date arithmetic works > differently (one can argue if "different" is wrong or more strict), > but Kronolith should be aware of that and deal with it. > > For example, for the large month view, simply doing this: > > ############# > --- kronolith.js.orig 2015-04-13 10:56:33.267068678 -0300 > +++ kronolith.js 2015-04-13 11:03:01.578750995 -0300 > @@ -514,6 +514,7 @@ > var tbody = $('kronolith-month-body'), > dates = this.viewDates(date, view), > day = dates[0].clone(); > + day.setHours(15); > > $('kronolithCurrent') > .update(this.setViewTitle(date, view, data)); > ################# > > on the updateView function where it builds the month table, solves > the issue by moving the time away from 00:00, avoiding that adding > days/weeks to Date results in an unexpected day due to the DST switch > point. > > Similar workarounds can be done for the other instances where DST is > causing problems.
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