[tz] Antarctic research base Vostok local time

[Paul Eggert]

On 12/17/23 07:00, АПС АКУЛОВ via tz wrote:
> Pse be informed that from December, 18, 2023 00:00 by my decision the 
> local time of the Antarctic research base Vostok will correspond to UTC+5.

Thank you for the information. Do you have a public announcement on the 
web, or some other source, that we can cite?

Does "00:00" mean 00:00 local time, or 00:00 UTC?

Has local time at Vostok been UTC+6 ever since 1957, or has it changed 
before?

I ask these questions because any TZDB changes will be after the fact, 
so we can take the time to be careful about the changes. (Please see [1] 
for why it's better to give advance notice about changes like this.)

Thanks.

[1]: https://data.iana.org/time-zones/tz-link.html#coordinating