Dale gave you the modules for date localisation, that is not adding a new calendar. The new calendar would need localization in all languages, and you would foremost add an enlish localication for the new calendar ( and

It would indeed be a good start if you start with creating a localized date handler in your language. That would give you an idea of all the paths involved. It is no problem to have a tamil date handler, while there is no full localization for your language.

About a new calendar then, that is part of the core of gramps,
So the gen.lib module, files and

You need to implement a tamil calendar to SDN number conversion. See the examples for persion, hebrew, islamic calendars in You should find resources on the internet for that.

Gramps stores the SDN and the calendar, and converts only on the GUI to what people expect. Like this, sorting on date, calculations, ... are fast.
If questions, don't hesitate to ask.


2011/6/30 Dale Athanasias <>
Hi Arun,

Welcome to Gramps

I believe you are looking for the wikipage on Date Handler's ( Different cultures and regions tend to have specific and different conventions for parsing and displaying dates. )

Also look at the following page about providing translations for GRAMPS:

As well as:

Dale Athanasias

> Date: Thu, 30 Jun 2011 02:21:22 +0530
> From:
> To:
> Subject: [Gramps-devel] Tamil calendar in gramps

> Hi all,
> I am willing to integrate Gramps and Tamil calendar. Can someone
> please help me get started with?
> Regards,
> Arun

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