Time Zone Formats
Work with different formats for time zone specifications: numeric values, strings, or entities.
Get your system time zone offset as a number of hours relative to Greenwich Mean Time.
In[1]:=

$TimeZone
Out[1]=

This is your system "TimeZone" entity.
In[2]:=

$TimeZoneEntity
Out[2]=

Get the current date and time for a specific named time zone.
In[3]:=

DateObject[TimeZone -> "Asia/Tokyo"]
Out[3]=

Get a list of example "TimeZone" entities.
In[4]:=

EntityValue["TimeZone", "SampleEntities"]
Out[4]=

Visualize the geographic region that observes Mountain Time in the United States.
In[5]:=

GeoGraphics[{Red, EdgeForm[Black],
Polygon[Entity["TimeZone", "America/Denver"]]},
GeoRange -> Quantity[650, "Miles"]]
Out[5]=
