Visualize Time Zones across the Globe
Date and time objects in the Wolfram Language include support for many time zone formats, including numeric offsets from GMT, named time zones and agnostic time zones.
Time zones can also be automatically detected based on any entity with location data.
The Wolfram Knowledgebase also includes additional information about named time zones.
Knowledgebase data also includes polygon data, which can be used in the GeoGraphics function.
The Wolfram Knowledgebase includes entity classes of time zones.
Use GeoListPlot to see the geographic bounds for all GMT time zones.
Show the polygons for all GMT offset time zones across the globe.