Tool

Time Zones

Every dot is lit by how high the sun is above it. Pin the places you care about, then type a time into any clock to ask what that hour is everywhere else.

Drag to turn it. Sweep to read the clock. Pinch or scroll to zoom.

Light up the hourSweep the rail or the map

Offsets and clock changes come from release 2026b of the IANA time zone database, built into this page rather than read from your browser. Rules published since then won’t appear until it’s rebuilt.