Đoàn Trần Công Danh wrote in <YyiQVelD+iBHN0V8@danh.dev>: |On 2022-09-19 22:21:58+0700, Đoàn Trần Công Danh <congdanhqx@gmail.com> \ |wrote: |> On 2022-09-19 16:21:25+0200, Steffen Nurpmeso <steffen@sdaoden.eu> wrote: |>> Đoàn Trần Công Danh wrote in |>>|On 2022-09-19 14:10:14+0100, David via tz <tz@iana.org> wrote: ... |> Anyway, thanks for "-t zone", it works for Vientiane and Phnom_Penh, |> however, it doesn't work for Hanoi (which is used for North Vietnam). Indeed, here, too. |> Hanoi has different timezone history from Saigon until 1976, but Hanoi |> has same history with Bangkok from 1970. |> |> Not sure if I built tzutils incorrectly. But, |> |> - "tzselect" w/o any options will choose Asia/Bangkok for |> North Vietnam and Asia/Ho_Chi_Minh for South Vietnam, |> so North Vietnam will have incorrect historical timezone pre-1970, |> which is not tzdb's concern |> - "tzselect -t zone" will choose Asia/Ho_Chi_Minh for the whole |> Vietnam, which has incorrect timezone history for North Vietnam |> from 1954 until 1976 | |I figured out, in order to have correct timezone for North Vietnam |with "tzselect -t zone", we need to apply this patch: ... |+++ b/asia ... |+Link Asia/Bangkok Asia/Hanoi # North Vietnam ... |+++ b/zone.tab ... |-VN +1045+10640 Asia/Ho_Chi_Minh |+VN +2101+10551 Asia/Hanoi Vietnam (north) |+VN +1045+10640 Asia/Ho_Chi_Minh Vietnam (south) Surely a bug to be fixed, then! --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)