[tz] Add new timezone for Hanoi Capital, Vietnam

[Kevin Lyda]

On Sun, Feb 17, 2019 at 8:50 PM Paul Eggert <eggert at cs.ucla.edu> wrote:
> KP wrote:
> > - After merging with Ha Tay, Hanoi (capital) is the largest province in
> > Vietnam
>
> tzdb goes by cities, not provinces. citypopulation.de estimates a population for
> Hanoi (including Ha Tay) that is less than that of Ho Chi Minh City.
> https://www.citypopulation.de/Vietnam-Cities.html gives 2017 estimates of 7.4
> million for the former, and 8.4 million for the latter. Although both are
> growing, the ratio of Ho Chi Minh City vs Hanoi (including Ha Tay) population
> also appears to be growing, suggesting that Hanoi is not catching up.

By populations...

% ls /usr/share/zoneinfo/America/|wc -l
     144
% ls /usr/share/zoneinfo/Asia/|wc -l
      99

Asia has around 59% of the world's population in 48 countries; the
Americas have 14% in 35 countries. Seems quite possible there's scope
to improve things in Asia.

Kevin

-- 
Kevin Lyda
Galway, Ireland