Epoch — Open Source Productivity App

Epoch displays the current moment across a wide range of time systems — updating every second, all in one place. WHAT EPOCH SHOWS YOU - Civil: date, time, day second, day percent — for any timezone worldwide - Technical: Unix time, International Atomic Time (TAI), GPS time - Astronomical: Greenwich Mean Sidereal Time, Julian Date, Modified Julian Date - Curiosities: Swatch Internet Time, three binary clock variants, Doomsday Clock CONFIGURABLE Build your own display with Watchlist tabs — combine any values from any category, in any order. Set custom labels, reorder by drag-and-drop, swipe to remove. DESIGNED FOR NIGHT USE Night mode displays red text on black — preserving your eyes' dark adaptation for stargazing. PRIVACY FIRST No ads. No notifications. No tracking. No analytics. No network requests. All settings stored locally on your device. No permissions required. Available in English and German.