Atlas Time

See time move on a new visual world clock. Swipe to move daylight and darkness across Earth, and choose timezone by city. Works anywhere, fully offline, zero ads.

Atlas Time creates a portrait of one shared moment across the globe. Coordinate a global meeting, plan travel, find the right time to call someone abroad, setup your world clock, or simply explore our beautiful blue planet.

Swipe through time and watch the boundary between day and night move across Earth. Pinch to zoom and see more detail. Choose any date and time to see how daylight changes throughout the year or see everywhere sunlight reaches right now.

Add cities and compare local times, dates, UTC offsets, daylight saving status, and sunrise or sunset information at a glance.

Atlas Time includes a curated offline city catalog and is designed for iPhone and iPad, with landscape layouts that make full use of larger screens. The complete app works offline and requires no account or sign-in.

One purchase includes everything, zero ads, no subscriptions, no gated content.

Atlas Time includes Earth imagery adapted from NASA Earth Observatory’s Blue Marble Next Generation and Black Marble datasets. NASA does not endorse Atlas Time, and no affiliation is implied.