What timezone am I in?

About timezone detection

How does this page detect my timezone?

Your browser reports your timezone using the JavaScript Intl.DateTimeFormat API. This uses your operating system timezone setting. No geolocation or IP lookup is needed.

What is an IANA timezone identifier?

IANA identifiers like America/New_York or Europe/London are the standard timezone names used by computers, phones, and programming languages. They are maintained by the IANA Time Zone Database and updated several times per year.

Why does my timezone show a city I don't live in?

IANA timezones are named after the largest city in each zone, not your specific location. If you live in Philadelphia, your timezone is America/New_York because New York is the reference city for the US Eastern timezone.