{Spam:6} Re: Jalaali?!

[Omid K. Rad]

I am forwarding MSFTs reply FYI











From: Kit George
[mailto:[EMAIL PROTECTED] 
Sent: February 8, 2005 1:52 AM
To: Omid K. Rad
Cc: Kathleen Carey; Matt Ayers
Subject: RE:
System.Globalization.JalaaliCalendar - Jalaali?





Omid, thanks again for following up. Ill
forward this to our people over here as some specific feedback.



We do go to great lengths to get this
right, and we work closely with relative people in the appropriate cultures to
ensure that we are making the best choices. Inevitably there are situations
where theres some disagreement on an issue, and the best decision is less than
100% clear. But Microsoft leverages all resources at its disposal (including
customer feedback such as your own) in ensuring we have selected the most
appropriate solution. There can be times when we have to pick one choice or
another, even if one party feels thats fundamentally not the best choice.



Thanks for your feedback, we really do
appreciate this kind of help: it makes sure we know what different data we have
to help get this right the first time.



Regards,
Kit



-Original Message-
From: Omid K. Rad
[mailto:[EMAIL PROTECTED] 
Sent: Thursday, February 03, 2005
2:12 PM
To: Kit George
Subject: System.Globalization.JalaaliCalendar
- Jalaali?



Ref. Suggestion ID: FDBK17514



Hi Kit,

Thank you for your attention and following
up. Regarding the Jalaali (Jalali) calendar, if you stick to the current name,
then you have to change the calculations as well. Let me declare some points:




The calendar in use in Iran is locally called Hejrie Shamsi and not
Jalali. Jalali refers to the primitive solar calendar that was formally used in
Iran, which is totally different from the one that is being used right now. In
the other hand it is wrong to use the name Hejrie Shamsi in English.


The calendar in use in Iran is never called Jalali by the academic
authorities who arrange the calendar each year.


The original Jalali was never based on Hijra as year 1. It was solar but
not solar hijra, thus the era that the Jalali calendar refers to is other than that
of the current calendar in use.


In the Jalali calendar all the months have 30 days. The remaining 5 days
in the year (or 6 days in a leap year) will come after the 12th
month, whereas in the modern Persian calendar there are 6 months of 31 days
followed by 5 months of 30 days plus a month of 29 days (or 30 in a leap year).


Taking a look at the calendars that are in the System.Globalization
namespace: GregorianCalendar, ChineseLunarCalendar,
HebrewCalendar,
JapaneseCalendar,
JulianCalendar,
KoreanCalendar,
TaiwanCalendar,
you sense a culture or the region where the calendar is originated from or is
being used. Jalaali or Hejrie Shamsi make no sense in English, but the Persian
or the Iranian speak well of a culture.


You regularly see the Persian calendar or the Iranian calendar in the
English references. You see Jalali mostly in the Persian references.



Having the above in mind, Jalali
calendar is clearly not a proper name, even as a local name for Irans current
calendar. So for the English name there are only two choices: either the
Persian calendar or the Iranian calendar. I personally prefer to use Persian
Calendar since it keeps the culture while not limiting it to a specific
country. For example people of Tajikistan use this calendar as their second
calendar, and Afghans are considering switching their calendar system to that
of Iranians.



Regards,

Omid K. Rad

(NotHalfBuff)








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Re: Jalaali?!

[Omid K. Rad]

http://whidbey.msdn.microsoft.com/library/en-us/cpref/html/T_System_Globalization_JalaaliCalendar.asp



At MSDN Whidbeys class library you read:



The JalaaliCalendar class represents the
Jalaali calendar. The Jalaali calendar is also known as the Persian calendar,
or the solar Hijri calendar as opposed to the Arabic lunar Hijri calendar. 

The Jalaali calendar is used in most
countries where Farsi is spoken, although some regions use different month
names. The Jalaali calendar is the official calendar of Iran and Afghanistan,
and is one of the alternative calendars in regions such as Kurdish Mesopotamia,
Kazakhstan, and Tajikistan.

Dates in the Jalaali calendar start
from the year of the Hijra, which corresponds to 622 C.E. and is the year when
Mohammed migrated from Mecca to Medina. For example, the date March 21, 2002
C.E. corresponds to the first day of the month of Farvardeen in the year 1381
A.H.

The Jalaali calendar is based on a
solar year and is approximately 365 days long. A year cycles through four
seasons, and a new year begins when the sun appears to cross the equator from
the southern hemisphere to the northern hemisphere as viewed from the center of
the Earth. The new year marks the first day of the month of Farvardeen, which
in the northern hemisphere is the first day of spring.

Each of the first six months in the
Jalaali calendar has 31 days, each of the next five months has 30 days, and the
last month has 29 days in a common year and 30 days in a leap year. A leap year
is a year that, when divided by 33, has a remainder of 1, 5, 9, 13, 17, 22, 26,
or 30. For example, the year 1370 is a leap year because dividing it by 33
yields a remainder of 17. There are approximately 8 leap years in every 33 year
cycle.



Even though it gives a rather good briefing of the
calendar, however some parts really need to be changed. Besides the name of the
calendar that is still under debate, it seems to me that we have to start over
discussing about the name of the language as well. Where do they speak Farsi?!
I speak Persian. Another fault there is the era indication of A.H.
A.H. refers to Anno Hijae which marks a Hijri date. For Jalali (if named so) it
would be A.P. which stands for Anno Persico or Anno Pesarum.



If you see any other points that need mentioning, please
let me know. I am listing these points to make a feedback to MS. In the
meantime you can make your own comments to MS through the email address at the
bottom of the page linked above.



Thanks,

Omid K. Rad






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need jalaali data convertion algorithm

[mzz]

any one send me or introduce me jalaali date convertion.
with thanx mzz
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