Time Difference: New York to Warsaw

Summary

New York and Warsaw are typically 6 hours apart (New York EST vs Warsaw CET) or 6 hours apart when both cities observe daylight saving time simultaneously (EDT vs CEST). During the brief spring and autumn transition weeks when the two regions switch clocks on different dates, the offset can temporarily shift to 5 hours. This tool reads your browser clock in real time, derives the current offset, and displays live ticking clocks for both cities.

How it works

1. Your browser's built-in Intl.DateTimeFormat API retrieves the current wall-clock time in each city's IANA time zone.
2. New York uses the "America/New_York" zone (UTC-5 in winter / UTC-4 in summer).
3. Warsaw uses the "Europe/Warsaw" zone (UTC+1 in winter / UTC+2 in summer).
4. The tool computes the hour offset by comparing the UTC offsets of both zones at the current moment.
5. Both clocks tick every second so the displayed times are always accurate.
6. A color-coded badge highlights whether Warsaw is ahead or the offset is unusual during DST transition weeks.

Use cases

• Schedule a video call between a New York team and a Warsaw office without manual timezone math.
• Check whether colleagues in Warsaw have already left for the day before sending a message.
• Plan travel departures and arrivals when flying between New York and Warsaw.
• Verify deadlines in a different timezone instantly.
• Confirm the offset during DST transition weeks when it briefly differs from the usual 6 hours.
• Use as a quick reference widget while working remotely across the Atlantic.

Frequently Asked Questions