[tz] Astrakhan region got approval to change its time zone

[Paul Eggert]

On 02/12/2016 11:29 AM, Alexander Krivenyshev wrote:
> http://asozd2.duma.gov.ru/work/dz.nsf/ByID/DE3C735A7CF5622743257F56004250F4/
> $File/91250509-91280822.pdf
Thanks for the heads-up. It looks like we'll need a new zone 
Europe/Astrakhan, split off from the existing Europe/Volgograd. Will the 
new zone will switch from UTC+3 on 2016-03-27 at 02:00, to UTC+4? This 
detail is not in the above URL.

In the tz database, rather than give the new zone an invented 
abbreviation like "ASTT" that does not correspond to existing practice, 
I'd like to get out of the name-inventing business and just use "+04".