IANA Timezone Database Lookup

Why "Area/Location," not a country name

The IANA database (also called the Olson database, after its original maintainer) names zones after a representative city rather than a country, because political boundaries and country-level rules change more often than the underlying time-reckoning rules for that specific location. Europe/Berlin is the identifier to use in code — not "Germany" or "CET" — because it's tied to that location's specific, complete history of offset and daylight-saving rule changes.

What "current offset" means here

The offset shown reflects whatever rule is in effect for that zone right now, including daylight saving if it currently applies — which is exactly why you should always store the IANA identifier itself (like America/New_York) instead of a fixed offset like UTC-5, if you need a timestamp to remain correct throughout the year.