Octal Sun Time0.2.1

Octal Sun Time shows the current time as a solar-day clock, replacing a conventional clock face with a cycle anchored to solar events. Each complete cycle runs from one solar midnight to the next, so the display follows the Sun’s daily movement rather than a standard 24-hour clock. The central readout presents the current hour and minute as a three-digit octal number.

An hour hand travels around this solar cycle, with 0 for solar midnight at the bottom and 4 for solar noon at the top. A golden arch highlights the daylight interval between sunrise and sunset. You can manage locations in the app and select one as the basis for the solar time being displayed. Additional places can be located through an online search connected to Wikidata, which sends the entered search text to a Wikidata server to obtain matching results; this lookup is the app’s described internet-connected function.

The app suits people exploring alternative time systems, studying solar patterns, or using sunrise and sunset as practical reference points. It is an Android Productivity app, available for universal architecture on Android 8.0 and later, and is open-source. Version 0.2.1 fixes a crash that occurred during location selection on devices using a non-English locale.