There seem to be a few minor errors in zone.tab (2007f and earlier): America/Cambridge_Bay: zone.tab latitude/longitude is incorrect, according to http://www.meds-sdmm.dfo-mpo.gc.ca/meds/Prog_Nat/benchmark/single_station2_e..., which gives +6907-10504, and my own experiments with Google Earth. Also zone.tab comments should be 'Mountain Time - west Nunavut' rather than 'Central Time - west Nunavut' Antarctica/DumontDUrville: The comment should very probably read 'Dumont d'Urville Station', rather than 'Dumont d'Urville Base', which seems to be a mis-translation of the French 'Base Dumont d'Urville'. See for example http://pdf.comnap.aq/comnap/comnap.nsf/P/StationsByName/FRdumo Pacific/Johnston: latitude/longitude is incorrect. The CIA seems to have it much closer with +1645-16931 (https://www.cia.gov/library/publications/the-world-factbook/geos/um.html) America/Aruba: latitude/longitude is incorrect. The CIA seems to have it much closer with +1230-06958 (https://www.cia.gov/library/publications/the-world-factbook/geos/aa.html) - looks like the current +1230-06858 is a typo. Europe/London: (!) latitude/longitude is incorrect - the current value is somewhere in the neighbourhood of Syon House in South-west London (http://en.wikipedia.org/wiki/Syon_House). Suggestions for a better value welcome. Ukrainian time zones Europe/Kiev, Europe/Uzhgorod and Europe/Zaporozhye: These might better be named Europe/Kyiv, Europe/Uzhhorod and Europe/Zaporizhia, being transliterations of the Ukrainian - rather than Russian - place-names. Similarly, the comment for Europe/Zaporozhye should perhaps be 'Zaporizhia, E Luhansk', rather than 'Zaporozh'ye, E Lugansk'. See for example http://www.uazone.net/Kiev_Kyiv.html and http://abcnews.go.com/Travel/wireStory?id=2588280. I'm sure I could rustle up references for the other names if pressed. Andy http://www.stemhaus.com/firefox/foxclocks/