Suntimes

Get it on F-Droid

Suntimes is an Android app that displays sunrise and sunset, twilight, blue and golden hour, solstices and equinoxes, moonrise and moonset, moon phases and illumination. It includes an alarm clock, and a large collection of widgets and add-ons.

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Suntimes Calendars
An add-on that supplies events to the Calendar app.
Solunar Periods
A hunting and fishing add-on app.
Natural Hour
A 24-hour clock & roman timekeeping add-on app.
Suntimes NFC
An NFC Add-on for Suntimes Alarms; dismiss alarms with an NFC tag.
Interval Midpoints
A midpoint calculator add-on for Suntimes Alarms; schedule alarms for event midpoints.

Suntimes is available gratis, but if it has proven its value, please pay as you feel.

Software development and maintenance requires the use of real world resources, and cannot be sustained without them. Your willingness to assign it real world value is greatly appreciated.

Philosophy

To create an application that is:

  1. high quality: solves a problem with well defined scope (and solves it well).
  2. libre software: grants essential software freedoms.
  3. respectful of privacy: no ads, no network access, no non-essential permissions, no bullshit.
  4. accessible: usable by a wide range of people with individual capability.
  5. localized: support for multiple languages, rules, and formats.
  6. compatible: runs on the widest range of devices possible (support for older devices).