Polygons representing time zones.

=== Original Data Source ===
Timezones

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.

Data attributes include time offset from Coordinated Universal Time
(UTC, aka “zulu” time) and map color codes for a 6-up and 8-up
styling.

Citation:
Made with Natural Earth [Accessed on: 2021-12-23]

Citation URL:
https://github.com/nvkelso/natural-earth-vector/blob/master/LICENSE.md