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Octal Sun Time

A clock for solar time in the octal number system
New in version 0.2.1
* A bug is fixed where location selection would crash the app on systems with non-English locale.
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.
  • app screenshot
  • app screenshot
  • app screenshot

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 0.2.1 (6) suggested Added on Dec 10, 2022

    This version requires Android 8.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • 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.
    • at.manuelbichler.octalsuntime.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.4 MiB PGP Signature | Build Log

  • Version 0.2.0 (5) - Added on Oct 09, 2022

    This version requires Android 8.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • 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.
    • at.manuelbichler.octalsuntime.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.4 MiB PGP Signature | Build Log

  • Version 0.1.3 (4) - Added on Oct 02, 2022

    This version requires Android 6.0 or newer.

    It is built 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