Tools · Open source
Epoch
RealEarthling
Time display for nerds: Unix, sidereal, binary clocks & more.
Opens the official F-Droid page
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
- Tap Download — the app's official page on F-Droid opens.
- Install it with the F-Droid app (recommended, for automatic updates), or use the download button on that page.
- If Android asks, allow the F-Droid app or your browser to install apps, then tap Install.
- Open Epoch from your app drawer.





