How To Implement A New Calendar

> Hi all,
>
> In Iran we use a calendar different from Gergorian and Islamic
> calendars; it's called Jalali calendar[1].  The people in Afghanistan
> use the same calendar but with different month names.
>
> So, I was wondering how can I implement this calendar in Pharo?  I've
> already done the conversion routines in Python[2] but that is nowhere
> near a real calendar.  What I have in mind is a subclass (?) of `Date`
> which seamlessly supports all `Date` operations but using a different
> calendar system.
>
> I'd appreciate any hits/pointers.
>
> TIA,

> Hi all,
>
> In Iran we use a calendar different from Gergorian and Islamic
> calendars; it's called Jalali calendar[1].  The people in Afghanistan
> use the same calendar but with different month names.
>
> So, I was wondering how can I implement this calendar in Pharo?  I've
> already done the conversion routines in Python[2] but that is nowhere
> near a real calendar.  What I have in mind is a subclass (?) of `Date`
> which seamlessly supports all `Date` operations but using a different
> calendar system.
>
> I'd appreciate any hits/pointers.
>
> TIA,
> --
> Bahman Movaqar  (http://BahmanM.com)
>
> ERP Evaluation, Implementation & Deployment Consultant
> PGP Key ID: 0x6AB5BD68 (keyserver2.pgp.com)

> Bahman,
>
> there has been a very powerful calendar/time library called Chronos. It
> was initially written for VisualWorks, but IIRC was also ported to
> Squeak and Pharo.
>
> The project's home page is not working any more (links to some arabic
> stuff which I can't read), but you can start research here:
> http://chronos-st.blogspot.de
>
> I am not sure it supports Jalali, but it's very likely it gives you all
> that's needed to implement it on top of Chronos.
>
> HTH
>
> Joachim
>
> Am 25.06.13 18:16, schrieb Bahman Movaqar:
>> Hi all,
>>
>> In Iran we use a calendar different from Gergorian and Islamic
>> calendars; it's called Jalali calendar[1].  The people in Afghanistan
>> use the same calendar but with different month names.
>>
>> So, I was wondering how can I implement this calendar in Pharo?  I've
>> already done the conversion routines in Python[2] but that is nowhere
>> near a real calendar.  What I have in mind is a subclass (?) of `Date`
>> which seamlessly supports all `Date` operations but using a different
>> calendar system.
>>
>> I'd appreciate any hits/pointers.
>>
>> TIA,
>
>