References to population in tzcode2012b/Theory 1) "However, uninhabited ISO 3166 regions like Bouvet Island do not need locations, since local time is not defined there." 2) "Use UTC (with time zone abbreviation "zzz") for locations while uninhabited." ------- 1a) http://wikitravel.org/en/Bouvet_Island reports Olav Peak exists on Bouvet Island, without discussing a need for the peak. It is out of the scope of the tzdb as defined in the Theory file to decide on whether regions need locations. 1b) there is no definition of "uninhabited" German WP reports a team of people has been there after the 1970-01-01 cutoff point: http://de.wikipedia.org/wiki/Bouvetinsel#cite_note-6 "Vom 24. Dezember 1978 bis zum 8. März 1979 hielt sich ein norwegisches Forschungsteam auf der Insel auf und führte biologische und geologische Forschungsarbeiten durch." There are more sources supporting the claim that it had been populated. 1c) There is no evidence that local time is not defined if a population is absent. http://en.wikipedia.org/wiki/Yukon-Koyukuk_Census_Area,_Alaska is mostly uninhabited but the whole area is observing UTC-09:00 according to http://commons.wikimedia.org/wiki/File:Timezoneswest.PNG maybe covered by America/Anchorage Alaska Time but no further geographic description found HM as no zone, but http://www.timegenie.com/country.time/hm "To ensure accuracy of information, timegenie.com contacted the Australian Antarctic Division [http://www.antarctica.gov.au/] . On January 3, 2005, a senior official confirmed that Heard Island and McDonald Islands are UTC/GMT +5 hours." 2a) A location changes its UTC offset when people move out or in? http://en.wikipedia.org/wiki/Mount_Chamberlin_(Alaska) on UTC most of the year? A ship landing on an island, changes the UTC offset observed on that island? The time a meteorite lands on island depends on whether people have been there or not? 1+2) Violate tzcode2012b/Theory: ----- Scope of the tz database ----- The tz database attempts to record the history and predicted future of all computer-based clocks that track civil time. To represent this data, the world is partitioned into regions whose clocks all agree about time stamps that occur after the somewhat-arbitrary cutoff point of the POSIX Epoch (1970-01-01 00:00:00 UTC). 1+2) Are inconsistently applied. Uninhabited locations are treated differently, depending on whether they are located in countries that have been inhabited during all time between 1970-01-01 and 2012-05-12 or not. If Bouvet Island would be part of TF, it could be included in a zone but since it is covered by BV it is not. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/