[tz] North Vietnam 1970 to 1975 - Asia/Hanoi belongs into main file

pierreneter pierreneter at gmail.com
Sun Jun 28 23:21:36 UTC 2020

And I wonder based on geographic area reasons, not political reasons.

On Mon, Jun 29, 2020 at 6:17 AM pierreneter <pierreneter at gmail.com> wrote:

> Sorry for my curiosity, if Asia/Bangkok represents areas with a time zone
> of +7, then why was Asia/Ho_Chi_Minh created?
> On Mon, Jun 29, 2020 at 4:12 AM Paul Eggert <eggert at cs.ucla.edu> wrote:
>> On 6/28/20 7:42 AM, Alois Treindl wrote:
>> > The public geonames.org database  assigns the zone Asia/Ho_Chi_Minh
>> for all
>> > location in country VN (Vietnam).
>> > This indicates that the comment above is not followed.
>> That's a problem with the geonames.org database, and I suggest reporting
>> the bug
>> to them. The bug should be reported regardless of whether we change tzdb
>> since
>> geonames.org should work with what we have now as well as with what we
>> might
>> have in the future. You can point them at the zone1970.tab file to help
>> explain
>> the situation.
>> A little background here. We don't have the resources to create entries
>> for
>> every location in this part of southeast Asia, with different transition
>> times
>> for when locations changed hands between North and South Vietnam during
>> the
>> 1970-1975 conflict. So we approximate by using Ho Chi Minh as the
>> representative
>> for clocks in south Vietnam, and Bangkok as the representative for clocks
>> in
>> Thailand, Cambodia, Laos and north Vietnam. We have links from
>> Asia/Bangkok to
>> Asia/Phnom_Penh and Asia/Vientiane for backward-compatibility purposes
>> only, as
>> the names Asia/Phnom_Penh and Asia/Vientiane would not exist according to
>> today's guidelines. There's no need for a backward-compatibility link for
>> Asia/Hanoi since that name never existed in tzdb. These are all technical
>> reasons, not political ones.
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