Time to convert
Convert to
Source time
–
| Zone | Local time | Date | Day | UTC offset | DST |
|---|
24-hour comparison for this date
9:00–17:00 local working hours. The outlined row is the time you entered.
Convert one date and time into several time zones at once, with day changes, UTC offsets, and daylight-saving status for that date.
| Zone | Local time | Date | Day | UTC offset | DST |
|---|
This time zone converter takes a date and time in one zone and shows the equivalent local time in as many other zones as you like, with the day change (+1 day or -1 day), the UTC offset in force, and whether daylight saving time applies in each place on that date. A 24-hour strip below the results lines up every hour of the source day against each target zone, which is the quickest way to find a call time that lands in working hours everywhere. Pick from about 60 cities covering every offset in use, including half-hour and 45-minute zones such as India and Nepal. The selection is saved in the page address so a colleague can open the same comparison.
Each zone is an IANA identifier such as America/New_York, and all offsets come from the browser's built-in time zone database via Intl.DateTimeFormat rather than a hard-coded table. To turn the wall-clock time you typed into an instant, the page first guesses that the time is UTC, asks the source zone what its offset is at that guess, subtracts it, and repeats once so the guess lands on the correct side of any daylight-saving change that day. That instant is then formatted in each target zone to produce the local date and time; the day offset is the calendar difference between the two dates. DST is flagged when a zone's current offset is the larger of its January and July offsets for that year.
Because regions that observe daylight saving time change their clocks on different dates. The United States moves in the second week of March and the first week of November, most of Europe on the last Sundays of March and October, and Australia in the opposite direction in April and October. For a few weeks each spring and autumn the usual gap is one hour larger or smaller, and the southern hemisphere shifts the gap by two hours between seasons.
The converted time falls on the next calendar day in the target zone. Converting 6:00 PM in Los Angeles to Tokyo gives 11:00 AM the following day, because Tokyo is 16 or 17 hours ahead. A -1 day marker means the target is still on the previous day. Always check the day marker when scheduling across the Pacific.
On the spring-forward day, times in the skipped hour (for example 2:30 AM in New York on the second Sunday of March) never occur. The converter resolves such a time to the nearest real instant, an hour later, and the result reflects that. On the fall-back day, times in the repeated hour are resolved to the first occurrence.
An offset describes a single moment, but a city's offset changes with daylight saving. New York is UTC-5 in winter and UTC-4 in summer, so a converter based on fixed offsets is wrong for half the year. Using the IANA zone name lets the browser apply the correct rule for the specific date you enter, including past and future rule changes it knows about.
Life in Weeks · Age Calculator · Days Between Dates · Date Calculator · Countdown to a Date · Online Timer · Stopwatch · Pomodoro Timer · World Clock · Meeting Time Planner · UTC Time Converter · New York to London Time
Browse all Time & Date Tools, or go back to every free tool on HeroYears.