On 2023-12-19 19:35, АПС АКУЛОВ via tz wrote:
20.12.2023 08:34, L. David Baron пишет:
On Tuesday 2023-12-19 11:04 -0800, Paul Eggert via tz wrote:
-# From Lee Hotz (2001-03-08): -# I queried the folks at Columbia who spent the summer at Vostok and this is -# what they had to say about time there: -# "in the US Camp (East Camp) we have been on New Zealand (McMurdo) -# time, which is 12 hours ahead of GMT. The Russian Station Vostok was -# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead -# of GMT). This is a time zone I think two hours east of Moscow. The -# natural time zone is in between the two: 8 hours ahead of GMT."
One observation about this 22-year-old quote: New Zealand (then and now) observed summer time for roughly half of the year, so "which is 12 hours ahead of GMT" was only correct for the southern hemisphere winter; in the summer New Zealand was 13 hours ahead.
If the observation of a 6 hour difference between McMurdo and Vostok was in the southern hemisphere summer while New Zealand was on summer time, that observation could be consistent with Vostok observing UTC+7 at the time.
Let me comment these comments too.
+# From Craig Mundell (1994-12-15): +# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP +# Vostok, which is one of the Russian stations, is set on the same +# time as Moscow, Russia.
See, the wintering team made Vostok time synchronized with MSK time, that is convenient for communications with AARI.
Two years ago I thought over an idea to change Vostok timezone to MSK but I refused that as TV news program wouldn't stream at our lunch time anymore. That time we had an only TV channel, now we have four.
If the observation of a 6 hour difference between McMurdo and Vostok was in the southern hemisphere summer while
New Zealand was on summer time, that observation could be consistent with Vostok observing UTC+7 at the time.
I told I change Vostok timezone for comfortable communications with Progress base that is the center of Russian Antarctic logistics. Years ago the center of our logistics was Mirny base — sledge convoys and aviation started from there. Have a look at Mirny's timezone: https://www.aari.ru/ekspeditsii/rossiyskaya-antarkticheskaya-ekspeditsiya-(r... It is UTC+7.
Below shows the currently defined Antarctic manned bases and stations. Are there others you know of which are used and should be added, e.g Progress, Mirny, and do you have links to their time practices and population numbers and schedules? This might mean that we define Mirny UTC+7 and Progress UTC+5 rules and/or zones with Vostok switching between them. $ grep Antarctica/ {a*a,zone*.tab,back????} | sort -t/ -k2 zone1970.tab:#@AQ Antarctica/ zone1970.tab:# For example, the comment "#@AQ<tab>Antarctica/" means the country code backward:Link Pacific/Auckland Antarctica/McMurdo backward:Link Pacific/Auckland Antarctica/South_Pole antarctica:Zone Antarctica/Casey 0 - -00 1969 zone.tab:AQ -6617+11031 Antarctica/Casey Casey zone1970.tab:AQ -6617+11031 Antarctica/Casey Casey antarctica:Zone Antarctica/Davis 0 - -00 1957 Jan 13 zone.tab:AQ -6835+07758 Antarctica/Davis Davis zone1970.tab:AQ -6835+07758 Antarctica/Davis Davis backzone:Zone Antarctica/DumontDUrville 0 - -00 1947 zone.tab:AQ -6640+14001 Antarctica/DumontDUrville Dumont-d'Urville australasia:Zone Antarctica/Macquarie 0 - -00 1899 Nov zone.tab:AU -5430+15857 Antarctica/Macquarie Macquarie Island zone1970.tab:AU -5430+15857 Antarctica/Macquarie Macquarie Island antarctica:Zone Antarctica/Mawson 0 - -00 1954 Feb 13 zone.tab:AQ -6736+06253 Antarctica/Mawson Mawson zone1970.tab:AQ -6736+06253 Antarctica/Mawson Mawson backzone:Link Antarctica/McMurdo Antarctica/South_Pole backzone:Zone Antarctica/McMurdo 0 - -00 1956 zone.tab:AQ -7750+16636 Antarctica/McMurdo New Zealand time - McMurdo, South Pole zone.tab:AQ -6448-06406 Antarctica/Palmer Palmer zone1970.tab:AQ -6448-06406 Antarctica/Palmer Palmer antarctica:# See 'southamerica' for Antarctica/Palmer, since it uses South American DST. backward:Link Pacific/Port_Moresby Antarctica/DumontDUrville backward:Link Asia/Riyadh Antarctica/Syowa antarctica:Zone Antarctica/Rothera 0 - -00 1976 Dec 1 zone.tab:AQ -6734-06808 Antarctica/Rothera Rothera zone1970.tab:AQ -6734-06808 Antarctica/Rothera Rothera backzone:Zone Antarctica/Syowa 0 - -00 1957 Jan 29 zone.tab:AQ -690022+0393524 Antarctica/Syowa Syowa antarctica:Zone Antarctica/Troll 0 - -00 2005 Feb 12 zone.tab:AQ -720041+0023206 Antarctica/Troll Troll zone1970.tab:AQ -720041+0023206 Antarctica/Troll Troll backward:Link Asia/Urumqi Antarctica/Vostok backzone:Zone Antarctica/Vostok 0 - -00 1957 Dec 16 zone.tab:AQ -7824+10654 Antarctica/Vostok Vostok -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry