Time Difference: New York to Prague

Summary

New York and Prague are typically 6 hours apart (New York EST vs Prague CET) or 6 hours apart when both cities observe daylight saving time simultaneously (EDT vs CEST). During the brief spring and autumn transition periods when the two regions switch clocks on different dates, the offset temporarily narrows 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. Prague uses the "Europe/Prague" 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. The meeting planner converts any time you enter in either city to the equivalent local time in the other.

Use cases

• Schedule a video call between a New York team and a Prague office without timezone math.
• Check whether colleagues in Prague have already left for the day before sending a message.
• Plan travel departures and arrivals when flying between New York and Prague.
• Verify a deadline in the other timezone instantly.
• Confirm the exact 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