A calendar provider add-on for Suntimes.
About this app
Provides calendar events for the solstices, equinoxes, twilight periods (astronomical, nautical, civil (sunrise, sunset)), and the moon (moonrise, moonset, major phases, apogee, perigee).
This add-on for Suntimes adds events to the Calendar app. It depends on Suntimes v0.10.3 or later.
The following permissions are required: * WRITE_SYNC_SETTINGS is used to create and add custom calendars to the Calendar app. * WRITE_CALENDAR is used to populate custom calendars with events. * suntimes.permission.READ_CALCULATOR is used to read data from the Suntimes provider.
Licensed under GPL-3.0-or-later.
What's New in v0.6.3
Imported from the F-Droid repository index.
- - updates translation to French.
Version history
May 2, 2026 · 2 MB · Android API 14–28 · code 21
Imported from the F-Droid repository index.
- - updates translation to French.
SHA-256 eac267fc3087b0624651ca4dc64f32063544e8161bfaf34943911a6b698f7bdb
Mar 9, 2026 · 2 MB · Android API 14–28 · code 20
Imported from the F-Droid repository index.
- - adds calendar title option.
- - adds translation to Czech.
- - updates translation to Russian.
SHA-256 62b9400190302d14184ed397d714b02b0d537534e2f7bd6eb4df9abd4e867869
Feb 15, 2024 · 2 MB · Android API 14–28 · code 19
Imported from the F-Droid repository index.
- - adds patterns for event position (azimuth, altitude, right ascension, and declination).
- - adds patterns for moon illumination, minor phase, and distance.
- - fixes bug where "update notification vibrates repeatedly" (#59).
- - updates translations to Polish (pl) and Esperanto (eo).
SHA-256 7222d3fcce9f0d03eb12cc5284356f8f13efa929d0c9b4541e9a099167d97382
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 com.forrestguice.suntimescalendars 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, 0.6.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Suntimes Calendars 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 Suntimes Calendars, and a listing is removed when the evidence for it stops holding up.
Get Suntimes Calendars
Every source we list for com.forrestguice.suntimescalendars 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
eac267fc3087b0624651ca4dc64f32063544e8161bfaf34943911a6b698f7bdb
Signing certificate
09eb5539add4b8c6d6b0426ad5039f08ff24aef973ddc78725674fe59d194447
Permissions Required
What each permission lets Suntimes Calendars do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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.
More Productivity apps
More from F-Droid
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.