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Date-aware timezone conversion
Search any two cities, then convert current or future times with daylight saving changes handled by timezone data.
Quick converter
How it works
Pick two cities
Search by city name, country, or timezone abbreviation. The converter finds the correct IANA timezone automatically.
Choose a date
Select any past or future date. The converter applies the exact DST rules for that date, not a fixed annual average.
See the offset
The time difference is shown live alongside a 24-hour comparison table highlighting business hours.
Plan the meeting
Open the meeting planner to compare up to 5 cities at once and find the best overlap window.
Why date matters
The time difference between two cities is not always the same throughout the year. When one city observes Daylight Saving Time and the other does not or when they change clocks on different dates the offset shifts. For example, the difference between London and New York changes by one hour for a few weeks each spring and autumn. Always pick a specific date when scheduling important calls or deadlines.