About Sidereal Time App
Sidereal helps astronomers, telescope users, and night-sky observers track Local Sidereal Time quickly and reliably. Use Sidereal to view the current local sidereal time, calculate sidereal time manually from longitude,...
Sidereal helps astronomers, telescope users, and night-sky observers track Local Sidereal Time quickly and reliably.
Use Sidereal to view the current local sidereal time, calculate sidereal time manually from longitude, search locations, and plan ahead with future sidereal time tools. You can also create scheduled alerts so you never miss an important observing window.
Features:
View current Local Sidereal Time
Calculate sidereal time manually from longitude
Search by city or location
Use decimal or DMS longitude entry
Schedule sidereal alerts and reminders
Export upcoming alerts to your calendar
Browse future sidereal times for planning
Choose light, dark, or night-vision display modes
Sidereal is designed to be fast, practical, and easy to use in the field, whether you are setting up for imaging, aligning a mount, or planning an observing session.
Previous Versions
Here you can find the changelog of Sidereal Time App since it was posted on our website on 2021-01-10 09:42:03.
The latest version is 4.2.04 and it was updated on 2026-06-10 23:06:12. See below the changes in each version.
Sidereal Time App version 4.2.04
Updated At: 2026-05-04
Changes: Added widget support
Sidereal Time App version 4.1.0
Updated At: 2026-04-22
Changes: General bug fixes, maintenance updates, and performance improvements.
Sidereal Time App version Twenty two
Updated At: 2022-12-16
Changes: General maintenance and bug fixes.
Sidereal Time App version Twenty
Updated At: 2022-02-26
Changes: Added Privacy Policy link on the contact us page. Various bug fixes.
Sidereal Time App version Fifteen
Updated At: 2021-06-07
Changes: Update app code to address various bug fixes.
Sidereal Time App version Fourteen
Updated At: 2019-02-19
Changes: Bug fix with google maps
Disclaimer
External Download
We do not host Sidereal Time App on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Galad and passed their terms and conditions to be listed there. We recommend caution when installing it.
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