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Timezones: Earth's Rotation Visualized

A real rotating 3D Earth: a directional sun light casts a genuine day/night terminator while 24 idealized 15°-wide timezone bands spin underneath it — click anywhere on the globe to read its live local time.

Space & Astronomy3DEasy60 FPS📱 Mobile-adapted⇄ 2D version

Earth's rotation at 15° per hour is the real physical basis of every civil timezone. This simulator spins a textured 3D globe at that true angular rate under a fixed sun light, so the day/night terminator is a genuine lighting result rather than a drawn overlay, while 24 idealized 15°-wide bands rotate with the surface and update their local clocks live — click anywhere to read a location's real local time relative to a chosen reference zone.

⚙ Under the hood

A real Earth globe rotating at the true 15°-per-hour rate under a fixed sun light, casting a genuine day/night terminator across 24 idealized timezone bands whose local clocks you can read by clicking any location.

timezonesearth-rotationday-night-cycleastronomynew-year

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install