Clock with Planisphere

Contains ads
Content rating
Everyone
1K+
Downloads
Content rating
Everyone
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About this app

This is a clock application with a planisphere for Android. The planisphere shows the current sky at the observation location by setting the latitude and the longitude. You can switch the northern and southern celestial hemispheres. The application name was changed in April 2023.

Standard Time:
You can read the standard time of your time zone. It is indicated by a red point (today's date) as the value of right ascension.

Local Sidereal Time:
You can read the local sidereal time. It is indicated by a small yellow triangle.

Planisphere mode:
You can use as a planisphere. You can change date and solar time by moving the Sun (sidereal time is fixed), change date and sidereal time by moving the red spot (solar time is fixed), or change solar and sidereal time by rotating the ring of right ascension (date is fixed).

GPS Available:
You can use the GPS for setting your location.

Magnitude 6 star:
All of the stars that are brighter than a magnitude 6 star are displayed.

Constellation lines:
Constellation lines are displayed.

The Sun and Analemma:
The position of the Sun is displayed with analemma.

The Moon and the lunar phase:
The position of the Moon is displayed with the lunar phase.

Astronomical Twilight:
You can check astronomical twilight time with altitude line of −18°.

Automatic Update:
The view is updated automatically.

App Widget:
App Widget is available.

10-sec ad:
An ad banner is displayed for 10 seconds after launching the app. No ads are displayed after 10 seconds.
Clock with planisphere (Astronomical Clock)
Updated on
Aug 11, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

• Internal library updates and routine maintenance.
• Minor performance and stability improvements.