Epoch

Epoch displays the current moment across a wide range of civil, technical, and astronomical time systems — all in one place, updating every second.

The name is borrowed from the technical term for a reference point in time (as in Unix epoch or astronomical epoch). The letters also happen to spell out Elegant presentation of chronometers — though the word came first.

Features

Time systems

- Civil – date, time, day second, day percent for any timezone - Technical – Unix time, TAI, GPS time - Astronomical – GMST, LMST, Julian Date, Modified Julian Date (MJD), MJD2000 - Curiosities – Swatch Internet Time, 3 binary clocks, Doomsday Clock

Configurable display

- Fully customizable tabs (Watchlist) — any values from any category, in any order, plus custom tab labels - Civil tab configurable with any timezone worldwide - Flexible timezone search (city, country, timezone name or abbreviation, UTC offset) - Drag-and-drop reordering, swipe to remove - Custom labels for individual values - Copy any value to clipboard with one tap

Design

- Night mode with red-on-black display — preserves dark adaptation for stargazing - Light, dark, and system themes - Full-screen toggle (double-tap on the app's name in the top-left corner) - 12 / 24-hour format toggle - Thousands separator toggle - Expanded date toggle - Available in English and German - Android widgets coming soon - Not yet: conversions between time systems

Privacy & permissions

- No ads. No notifications. No tracking. No analytics. No network requests. - All settings stored locally on your device - No permissions required

What makes Epoch different?

Most clock apps show you one or two time formats. Epoch shows you 18 different time values simultaneously, lets you pick exactly which ones you care about, and explains what each one means. It is built for people who are curious about how time actually works.

License

© 2026 RealEarthling

GPL-3.0-or-later