Based on the most common patterns, daylight saving time is not observed in the following broad categories:
- Entire countries or large regions that opt out
- US jurisdictions that do not observe DST
- Some island territories and overseas possessions that do not participate
Direct answer:
- Worldwide: Many countries no longer observe DST, including larger parts of Africa and Asia, with several European and Latin American countries having abolished DST in recent years. Specifics vary by country and year, so check the latest local government or time-keeping authority for a precise list for 2025.
- United States and territories: Hawaii and most of Arizona do not observe DST, and several territories (American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, U.S. Virgin Islands) also do not observe DST.
- Other notable examples: Some countries such as Namibia, Samoa, and Uruguay have abolished DST in recent years, while large regions in Europe and North America continue to observe it seasonally in many places.
If you’d like, I can tailor a precise current list by country or by region (e.g., “which countries in Europe no longer observe DST in 2025” or “which US states and territories don’t observe DST”).
