Data sources and accuracy
GlobalTimeAtlas calculates local time from IANA time zone identifiers, browser and server internationalization data, and curated country and city datasets used by the application.
Time calculations
Current local times are generated at request time using standard JavaScript internationalization APIs and IANA time zone names such as Africa/Lagos, Europe/London, and America/New_York. This lets the site reflect current UTC offsets and many daylight saving changes without manually hard-coding every seasonal rule.
Time zone rules can change when governments update their official time policy. We treat live pages as practical current references and recommend checking date-specific conversions before booking flights, publishing event times, or scheduling important calls.
Country and city coverage
Country and city pages are built from curated application datasets combined with time zone identifiers. Some countries have multiple time zones; in those cases, pages use the representative zone available in the dataset and link to city-level pages where more specific local time context is useful.
If you notice a place that should be corrected or expanded, use the contact page so it can be reviewed.