World Time Zone Database

The World Time Zone Database is a comprehensive, regularly updated collection of information about the world's time zones—all the different regions and their respective local times. It details when each zone observes standard time, daylight saving time, and any recent changes. This data allows computers and applications to accurately determine the correct local time anywhere in the world, ensuring synchronization across global systems, scheduling, and communications. It's used widely in software and online services to keep time conversions precise and consistent worldwide.