Issues

• CldrPrimaryZones is not populated

  mattjohnsonpint/TimeZoneNames#151 · Filter by author jnyrup opened on Oct 21, 2026

• New time zone identifiers for Alberta and British Columbia

  mattjohnsonpint/TimeZoneNames#149 · Filter by author codethisio opened on Oct 12, 2026
  1

• Missing Standard abbreviation for London, Dublin and Belfast

  mattjohnsonpint/TimeZoneNames#148 · Filter by author jnyrup opened on Oct 12, 2026

• How is zone-precedence.txt generated?

  mattjohnsonpint/TimeZoneNames#134 · Filter by author guillerodriguez opened on Nov 2, 2025
  2

• Have you consider String.Intern for alot of your constant values?

  mattjohnsonpint/TimeZoneNames#121 · Filter by author oriches opened on May 14, 2025

• Incorrect names for Antarctica/Casey

  mattjohnsonpint/TimeZoneNames#120 · Filter by author Zooce opened on May 9, 2025
  2

• Metazone date ranges not taken into account

  bugenhancement
  mattjohnsonpint/TimeZoneNames#117 · Filter by author mattjohnsonpint opened on Apr 11, 2025

• Pacific/Bougainville is incorrectly matched to Papua New Guinea Time

  mattjohnsonpint/TimeZoneNames#116 · Filter by author Zooce opened on Apr 10, 2025
  3

• Invalid time zone name doesn't error

  mattjohnsonpint/TimeZoneNames#113 · Filter by author mattjohnsonpint opened on Jan 31, 2025

• High Memory Usage

  mattjohnsonpint/TimeZoneNames#107 · Filter by author Dummiesman opened on May 3, 2024
  1

• Feature request - unique display names on Windows

  enhancement
  mattjohnsonpint/TimeZoneNames#73 · Filter by author Ansssss opened on Feb 22, 2022

• TZNames.GetLanguageCodes() does not contain en_us

  bug
  mattjohnsonpint/TimeZoneNames#67 · Filter by author Carmageddon opened on Jul 16, 2021
  2

• Windows Server 2016 - The type initializer for 'TimeZoneNames.TZNames' threw an exception.

  bug
  mattjohnsonpint/TimeZoneNames#65 · Filter by author akirby opened on Apr 1, 2021
  7

  

• Xamarin.iOS - Failure to Load TimeZoneData when linking

  mattjohnsonpint/TimeZoneNames#57 · Filter by author ibrahimmd90 opened on Oct 1, 2019

• TZNames.GetCountryNames() returns territories without time zones and different results per locale

  bug
  mattjohnsonpint/TimeZoneNames#53 · Filter by author RobJohnston opened on Mar 1, 2019
  1

• Full list of TimeZoneInfos

  enhancement
  mattjohnsonpint/TimeZoneNames#49 · Filter by author cocowalla opened on Oct 10, 2018
  5

  

• Need a way to get country and city name(s) for a given IANA time zone identifier

  mattjohnsonpint/TimeZoneNames#47 · Filter by author tomkludy opened on Sep 20, 2018
  3

• Handle CLDR fallback rules properly

  mattjohnsonpint/TimeZoneNames#12 · Filter by author mattjohnsonpint opened on Nov 13, 2015