I want to convert dates to Jalali format. The problem is I have to change some of the core files in /includes and /modules. Is it possible to do this without jumping right into the core?


I think your best bet is Calendar_Systems module that will not do the core changes but everything else needed on the frontend.

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  • Thanks but it's in development for D7. – Pedram Behroozi Feb 15 '12 at 12:49

You could set the default timezone for your site at


This will change the output of all dates on your site. You shouldn't have to edit any core files to set your sites timezone.

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