A clock for solar time in the octal number system
About this app
A clock that shows the octal solar time of your chosen location.
Octal solar time is a location-specific time system that defines a day as the time between two consecutive solar midnights. Known to contain 24 hours in the regular clock system, a day is divided into 8 equally long octal hours. Each octal hour is divided into 64 equally long octal minutes. Each octal minute is divided into 64 equally long octal seconds.
The clock is visualized by an hour finger that runs one cycle per day, with 0 (solar midnight) at the bottom and 4 (solar noon) at the top. In addition, the octal hour and minute is also shown digitally as a three-digit octal number in the center. A golden arch visualizes the time between sunrise and sunset.
Locations can be managed and chosen. Locations can be added by an online search function backed by wikidata.
Privacy notice: When using the location search function, the app connects to a wikidata server and shares your typed search term in order to get search results. This is the only situation when the app uses internet connection.
Licensed under GPL-3.0-only, by Manuel Bichler.
What's New in v0.2.1
Imported from the F-Droid repository index.
- * A bug is fixed where location selection would crash the app on systems with non-English locale.
Version history
Dec 10, 2022 · 4.4 MB · Android API 26–33 · code 6
Imported from the F-Droid repository index.
- * A bug is fixed where location selection would crash the app on systems with non-English locale.
SHA-256 fe47baf787900a84028e78100aa37699597ae7e555c5c17a2979df42ced7137b
Oct 9, 2022 · 4.4 MB · Android API 26–33 · code 5
Imported from the F-Droid repository index.
- * No location permission anymore. Locations are added by searching for them with wikidata backend.
- * Multiple locations can be added, one location can be chosen for the clock screen
- * Locations can be deleted individually or in bulk, and shared with other apps
- * default clock location is Greenwich until another location is chosen
- * fixed a bug where the clock would crash on days without sunrise or sunset
- * the app's layout now also works well in horizontal use
SHA-256 900591c63aa67979e961b5c9d65a530fd6191c2e5efb68cd6b7e0168329fc7c6
Oct 2, 2022 · 4.1 MB · Android API 23–33 · code 4
Imported from the F-Droid repository index.
- * support older Android versions back to Android 6
SHA-256 8c28e4e5239fc9ebef298318656cece7018a8965916e228762948ee717b2c16a
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be at.manuelbichler.octalsuntime is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 0.2.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Octal Sun Time first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Octal Sun Time, and a listing is removed when the evidence for it stops holding up.
Get Octal Sun Time
Every source we list for at.manuelbichler.octalsuntime is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
fe47baf787900a84028e78100aa37699597ae7e555c5c17a2979df42ced7137b
Signing certificate
05f7267fec6eeaf6c039e3054c0b82d269413ca39b9a3fb44df5967f3d8e17b4
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.