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Octal Sun Time

A solar clock in the octal number system
New in version 0.2.0
* 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
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.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 0.2.0 (5) suggested Added on 2022-10-09

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • at.manuelbichler.octalsuntime.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.4 MiB PGP Signature | Build Log

  • Version 0.1.3 (4) - Added on 2022-10-02

    This version requires Android 6.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • at.manuelbichler.octalsuntime.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4 MiB PGP Signature | Build Log