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b3de20181a
* feat: add .NET timezone handling guidance and reference materials * feat: update Finland, Lithuania, Estonia timezone reference in index * feat: remove Finland, Lithuania, Estonia timezone reference from index
88 lines
4.3 KiB
Markdown
88 lines
4.3 KiB
Markdown
# .NET Timezone Reference Index
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## Windows To IANA Mapping
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Use this file for common mappings between Windows timezone IDs and IANA timezone IDs.
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### Asia And Pacific
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| Display Name | Windows ID | IANA ID | UTC Offset | DST? |
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| --- | --- | --- | --- | --- |
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| Sri Lanka Standard Time | Sri Lanka Standard Time | Asia/Colombo | +05:30 | No |
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| India Standard Time | India Standard Time | Asia/Calcutta | +05:30 | No |
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| Pakistan Standard Time | Pakistan Standard Time | Asia/Karachi | +05:00 | No |
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| Bangladesh Standard Time | Bangladesh Standard Time | Asia/Dhaka | +06:00 | No |
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| Nepal Standard Time | Nepal Standard Time | Asia/Katmandu | +05:45 | No |
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| SE Asia Standard Time | SE Asia Standard Time | Asia/Bangkok | +07:00 | No |
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| Singapore Standard Time | Singapore Standard Time | Asia/Singapore | +08:00 | No |
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| China Standard Time | China Standard Time | Asia/Shanghai | +08:00 | No |
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| Tokyo Standard Time | Tokyo Standard Time | Asia/Tokyo | +09:00 | No |
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| Korea Standard Time | Korea Standard Time | Asia/Seoul | +09:00 | No |
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| AUS Eastern Standard Time | AUS Eastern Standard Time | Australia/Sydney | +10:00/+11:00 | Yes |
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| New Zealand Standard Time | New Zealand Standard Time | Pacific/Auckland | +12:00/+13:00 | Yes |
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| Arabian Standard Time | Arabian Standard Time | Asia/Dubai | +04:00 | No |
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| Arab Standard Time | Arab Standard Time | Asia/Riyadh | +03:00 | No |
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| Israel Standard Time | Israel Standard Time | Asia/Jerusalem | +02:00/+03:00 | Yes |
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| Turkey Standard Time | Turkey Standard Time | Europe/Istanbul | +03:00 | No |
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### Europe
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| Display Name | Windows ID | IANA ID | UTC Offset | DST? |
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| --- | --- | --- | --- | --- |
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| UTC | UTC | Etc/UTC | +00:00 | No |
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| GMT Standard Time | GMT Standard Time | Europe/London | +00:00/+01:00 | Yes |
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| W. Europe Standard Time | W. Europe Standard Time | Europe/Berlin | +01:00/+02:00 | Yes |
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| Central Europe Standard Time | Central Europe Standard Time | Europe/Budapest | +01:00/+02:00 | Yes |
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| Romance Standard Time | Romance Standard Time | Europe/Paris | +01:00/+02:00 | Yes |
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| E. Europe Standard Time | E. Europe Standard Time | Asia/Nicosia | +02:00/+03:00 | Yes |
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| GTB Standard Time | GTB Standard Time | Europe/Bucharest | +02:00/+03:00 | Yes |
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| Russian Standard Time | Russian Standard Time | Europe/Moscow | +03:00 | No |
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### Americas
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| Display Name | Windows ID | IANA ID | UTC Offset | DST? |
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| --- | --- | --- | --- | --- |
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| Eastern Standard Time | Eastern Standard Time | America/New_York | -05:00/-04:00 | Yes |
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| Central Standard Time | Central Standard Time | America/Chicago | -06:00/-05:00 | Yes |
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| Mountain Standard Time | Mountain Standard Time | America/Denver | -07:00/-06:00 | Yes |
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| Pacific Standard Time | Pacific Standard Time | America/Los_Angeles | -08:00/-07:00 | Yes |
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| Alaskan Standard Time | Alaskan Standard Time | America/Anchorage | -09:00/-08:00 | Yes |
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| Hawaiian Standard Time | Hawaiian Standard Time | Pacific/Honolulu | -10:00 | No |
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| Canada Central Standard Time | Canada Central Standard Time | America/Regina | -06:00 | No |
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| SA Eastern Standard Time | SA Eastern Standard Time | America/Cayenne | -03:00 | No |
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| E. South America Standard Time | E. South America Standard Time | America/Sao_Paulo | -03:00/-02:00 | Yes |
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### Africa
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| Display Name | Windows ID | IANA ID | UTC Offset | DST? |
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| --- | --- | --- | --- | --- |
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| South Africa Standard Time | South Africa Standard Time | Africa/Johannesburg | +02:00 | No |
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| Egypt Standard Time | Egypt Standard Time | Africa/Cairo | +02:00 | No |
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| E. Africa Standard Time | E. Africa Standard Time | Africa/Nairobi | +03:00 | No |
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| W. Central Africa Standard Time | W. Central Africa Standard Time | Africa/Lagos | +01:00 | No |
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| Morocco Standard Time | Morocco Standard Time | Africa/Casablanca | +00:00/+01:00 | Yes |
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## NodaTime Providers
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```csharp
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DateTimeZoneProviders.Tzdb["Asia/Colombo"]
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DateTimeZoneProviders.Bcl["Sri Lanka Standard Time"]
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```
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## TimeZoneConverter Examples
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```csharp
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string ianaId = TZConvert.WindowsToIana("Sri Lanka Standard Time");
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string windowsId = TZConvert.IanaToWindows("Asia/Colombo");
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TimeZoneInfo tz = TZConvert.GetTimeZoneInfo("Asia/Colombo");
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```
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## Programmatic Discovery
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```csharp
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foreach (var tz in TimeZoneInfo.GetSystemTimeZones())
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{
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Console.WriteLine($"ID: {tz.Id} | Display: {tz.DisplayName}");
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}
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```
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