TimeZoneConverter

Lightweight library to convert quickly between IANA, Windows, and Rails time zone names.

Installation

PM> Install-Package TimeZoneConverter

This library is targeting .NET Standard 2.0, 1.3, 1.1, and .NET 4.5. See the .NET Standard Platform Support Matrix for further details.

Notes

This library uses a combination of data sources to achieve its goals:

• The Unicode CLDR project
• The IANA time zone data
• Microsoft Windows time zone updates
• The MAPPING data from ActiveSupport::TimeZone in the Rails source code.
• The author's best-informed knowledge and opinions

Usually, the latter is reserved for edge cases, and for newly-introduced zones that may or may not have been published to official sources yet.

Important: Since this data can change whenever new time zones are introduced from any of these sources, it is recommended that you always use the most current revision, and check for updates regularly.

Example Usage

Convert an IANA time zone name to the best fitting Windows time zone ID.

string tz = TZConvert.IanaToWindows("America/New_York");
// Result:  "Eastern Standard Time"

Convert a Windows time zone name to the best fitting IANA time zone name.

string tz = TZConvert.WindowsToIana("Eastern Standard Time");
// result:  "America/New_York"

Convert a Windows time zone name to the best fitting IANA time zone name, with regard to a specific country.

string tz = TZConvert.WindowsToIana("Eastern Standard Time", "CA");
// result:  "America/Toronto"

Get a TimeZoneInfo object from .NET Core, regardless of what OS you are running on:
Helps with .NET CoreFX issue #11897
This function is only available for .NET Standard 1.3+ or full .NET Framework targets

// Either of these will work on any platform:
TimeZoneInfo tzi = TZConvert.GetTimeZoneInfo("Eastern Standard Time");
TimeZoneInfo tzi = TZConvert.GetTimeZoneInfo("America/New_York");

Convert a Rails time zone name to the best fitting IANA time zone name.

string tz = TZConvert.RailsToIana("Mexico City");
// result:  "America/Mexico_City"

Convert a Rails time zone name to the best fitting Windows time zone ID.

string tz = TZConvert.RailsToWindows("Mexico City");
// result:  "Central Standard Time (Mexico)"

Convert an IANA time zone name to one or more Rails time zone names.

IList<string> tz = TZConvert.IanaToRails("America/Mexico_City");
// Result:  { "Guadalajara", "Mexico City" }

Convert a Windows time zone ID to one or more Rails time zone names.

IList<string> tz = TZConvert.WindowsToRails("Central Standard Time (Mexico)");
// Result:  { "Guadalajara", "Mexico City" }

License

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