Time Zone Converter

Frequently Asked Questions

What is the time difference between Italy and New York?

6 hours, with Rome ahead. It briefly becomes 5 hours for about two weeks in March and one week in autumn, because the US and EU switch daylight saving on different dates. Pick the actual date in the tool and it applies the correct offset for that day.

Does it handle daylight saving time automatically?

Yes. Conversions use the browser's IANA tz database, which records every zone's DST rules and their historical changes. The offset shown next to each result is the one in force at that specific moment, not a fixed yearly value.

Why city names like Europe/Rome instead of CET or EST?

Because abbreviations are ambiguous (IST means India, Ireland or Israel) and seasonal (EST silently becomes EDT in summer). IANA identifiers name a place, and the database knows that place's rules for any date, which is the only unambiguous way to talk about time zones and the reason programming languages use it.

What does the +1 day flag mean?

It means the converted time falls on the next calendar day relative to the source zone: 23:00 Friday in Rome is 06:00 Saturday in Tokyo. The flag saves the classic mistake of agreeing on 'Friday 11pm' with someone for whom it is already Saturday.

How do I convert a UTC timestamp from my logs?

Set the source zone to UTC, enter the timestamp's date and time, and read your local zone in the results. If your logs use Unix epoch seconds instead, the Unix Timestamp Converter on this site takes the raw number directly.

Which zone should remote teams schedule in?

One reference zone, usually UTC or the zone the office majority sits in. State it explicitly in every invite and let each person convert. Calendar tools do this automatically precisely because ad-hoc mental conversion around DST weeks is where meetings get missed.