Tools · Open source

Epoch

RealEarthling

Time display for nerds: Unix, sidereal, binary clocks & more.

Download

Opens the official F-Droid page

Epoch screenshot 1Epoch screenshot 2Epoch screenshot 3Epoch screenshot 4Epoch screenshot 5Epoch screenshot 6

About Epoch

Epoch shows the current moment across a wide range of time systems —

updating every second, all in one place.

What Epoch gives you

- Civil: date, time, day second, day percent, seven-segment clock — for any timezone

- Technical: Unix time, International Atomic Time (TAI), GPS time

- Astronomical: Greenwich and Local Mean Sidereal Time (GMST, LMST), Julian Date variants

- Curiosities: decimal time, Swatch Internet Time, New Earth Time, Doomsday Clock, 3 binary clocks, octal time and hexadecimal time

Copy any value to clipboard with one tap or long press.

Configurable

- Build your own Watchlist tabs — combine any value from any category, in any order.

- All built-in tabs (Civil, Technical, Astronomical, Curiosities) are fully customizable too, and can be hidden and restored anytime.

- Set custom labels, section headers, and dividers.

- Reorder by drag-and-drop, swipe to remove.

- Customize date and time formats, configure timezone information.

- Optionally pin timezones to always show standard or summer time.

- 7-day advance notice of clock changes, with upcoming transitions shown in the value's info dialog.

- Export, import, and reset all preferences.

Focus mode

- Double-tap any value for a full-screen, always-on display — ideal as a bedside clock.

- Adjustable brightness (Android) and text color.

- Toggle details with a long press.

- Burn-in protection through gentle, periodic pixel shifting (especially useful on OLED screens).

- Optionally start the app directly in Focus mode.

Designed for night use

Night mode displays red text on black — preserving your eyes' dark adaptation for stargazing.

What's new in 1.5.2

- Updated timezone database (IANA 2026e) for upcoming clock changes - Improved build information

How to install Epoch

  1. Tap Download — the app's official page on F-Droid opens.
  2. Install it with the F-Droid app (recommended, for automatic updates), or use the download button on that page.
  3. If Android asks, allow the F-Droid app or your browser to install apps, then tap Install.
  4. Open Epoch from your app drawer.

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