Physical > Time Zones
Vector > Physical > Time Zones
Data Source: Natural Earth > 1:10m Cultural Vectors > Timezones
Website: https://www.naturalearthdata.com/downloads/10m-cultural-vectors/
Description
Time zones primarily derive from the Central Intelligence Agency map of Time Zones, downloaded from the World Factbook website May 2012. Boundaries were adjusted to fit the Natural Earth line work at a scale of 1:10 million and to follow twelve nautical mile territorial sea boundary lines when running along coasts. Additional research was performed based on recent news to update several areas including the international dateline and time zone adjustments for Samoa and Tokelau and the discarding of daylight savings time in Russia.
The Time Zones layer takes no account of Daylight Savings Time. Not all countries observe DST. Countries that observe multiple time zones can sometimes have regions that practice or abstain from DST, causing irregularities within a single country. Some countries declare that Daylight time is their "standard" time and they roll their clocks BACK an hour to observe 'Winter Time.' Other countries take that a step further and permanently observe DST all year round. Morocco is one example: they used to observe UTC-0, and participated in DST. In October of 2018 they declared that UTC-0 DST is their permanent, year-round time.
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