Provides an IANA time zone identifier from latitude and longitude coordinates.

PM> Install-Package GeoTimeZone

As of version 3.0, this library is targeting .NET Standard 1.1+, .NET Standard 2.0+, and .NET Framework 4.0+. See the .NET Standard Platform Support Matrix for further details.

string tz = TimeZoneLookup.GetTimeZone(50.4372, -3.5559).Result;  // "Europe/London"

This library returns IANA time zone IDs. If you need a Windows time zone ID, pass the return value into the TimeZoneConverter library's TZConvert.IanaToWindows method, or to TZConvert.GetTimeZoneInfo to get a TimeZoneInfo object in a platform-neutral manner.

This library uses the time zone border definitions from the Timezone Boundary Builder project, which in-turn derive from Open Street Map. As some international borders are the subject of dispute, the results may or may not align with your worldview. Use at your own risk.

This library is provided free of charge, under the terms of the MIT license.