World Timezone Converter & Reference
Compare local time between any two of 213 cities on 6 continents, with DST handled by IANA rules, plus a searchable full time zone reference table.
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World Timezone Converter & Reference
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Compare local time between any two of 213 cities on 6 continents, with DST handled by IANA rules, plus a searchable full time zone reference table.
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About World Timezone Converter & Reference
IANA zone, UTC offset, and DST fields
The table records key cities and capitals with country, IANA timezone identifier, standard UTC offset, DST offset when applicable, and typical DST months. The data is maintained from tzdata-aligned references for quick planning.
Search, continent filter, and sorting
You can search by city, country, IANA identifier, or offset text, filter by continent, and sort by UTC offset or name. The selected search, continent, and sort mode are kept in the shareable table URL.
Convert a date and time between cities
Choose city A as the source and city B as the destination. Enter the local date and time in city A to see the corresponding time and date in city B. The converter applies each IANA zone at that instant, shows UTC offsets and date changes, and warns if a clock change skips or repeats the source local time.
Verify exact dates for commitments
Timezone laws and daylight-saving schedules can change. The converter follows the IANA rules available in your browser, but for flights, contracts, meetings, releases, or deadlines, confirm the exact local time with the relevant airline, calendar, system, or authority.
FAQ
Common questions and answers about this topic.
How do I calculate the time difference between two cities?
Choose city A and city B. The calculator shows both local times, their exact difference, UTC offsets, and whether the target is on the previous or next day.
Does the timezone converter handle daylight saving time?
Yes. It uses each city's IANA timezone at the chosen instant and warns when a clock change makes a local time nonexistent or ambiguous.
Can I share a city time conversion?
Yes. The share button creates a URL containing both selected cities and the optional local date and time.
How do I convert a specific date and time between cities?
Choose city A as the source and city B as the destination, then select Convert a date and time. Enter the date and clock time in city A, rather than your device time. The result shows the corresponding local date and time in city B, including any previous- or next-day change.
Why can the time difference between cities change by date?
One city may use daylight saving time while the other does not, or they may change clocks on different dates. A fixed UTC offset can therefore give the wrong difference for your chosen date. Enter the actual date and time so the converter uses the IANA rules available in your browser for that instant.
Data Sources
This tool's data is compiled from the authoritative sources below.
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