[tz] [PATCH] tzdata: Asia/Ha_Noi: Add new timezone

[Trần Ngọc Quân]

Hello Paul Eggert,
> On 05/10/2014 10:22, Paul Eggert wrote:
>> Trần Ngọc Quân wrote:
> Dr. Lê thành Lân
> I find his email, but it I'm not sure he still use it. But I will try
> to contact.
> lethanhlan at yahoo.de <mailto:lethanhlan at yahoo.de> I will try to contact
> Hồ Ngọc Đức.
Unfortunately, I can't contact both of them.
>> We need to correct the Asia/Ho_Chi_Minh entry regardless of what we
>> do about Hanoi, and that is what the patch does.
Of cause, Asia/Ho_Chi_Minh properly need to fix.
>>   As I pointed out in my most recent email, it appears to be
>> unnecessary to add an entry for Hanoi, since Hanoi does not have a
>> unique time zone history since 1970.  In contrast, Ho Chi Minh City
>> (now that its data are corrected) does have a unique time zone
>> history since 1970 and therefore needs a distinct Zone.
Wiki [1] point out Hanoi and Ho Chi Minh timezone diff from 1970 - 1975:
Hanoi used GMT +7 while Ho Chi Minh used GMT +8. So I sure timezone in
Hanoi is unique. You decide add or not by yourself.
I read carefully both [1] and [2]. They are the same content. I think
they are the best document. So you can use [1].

Paul Eggert, please make new patch. I will review.
About Cambodia and Lao, I recommend remove them. They can use
Asia/Bangkok instead. Unique timezone for them will create when we have
enough document.

[1] http://en.wikipedia.org/wiki/Time_in_Vietnam
[2] http://www.thoigian.com.vn/?mPage=P80D01

-- 
Trần Ngọc Quân.

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