CAL20000 STAR CHART

Name: CAL20000 STAR CHART
Rating: 5.00 (289 reviews)
Author: YOUNGCHANG KOH(고영창)

LiveYOUNGCHANG KOH(고영창)1 app · 74K installsLifestyleFreecom.calendar.cal20000

20,000-year lunisolar calendar + live star chart with eclipses & planet events.

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Total installs: 73,973
Installs / day: 0
Rating: 5.0★
Released: 7 Aug 2011
Last update: 27 Aug 2026
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

No data shared with third parties
No data collected
Follows the Play Families Policy

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

3 in 2 groups

2 Sensitive0 Notable1 Routine

What this app can do with your phone

Know roughly where you are, using mobile towers and Wi-Fi networks
Know your exact location using GPS, Wi-Fi and mobile networks

LocationSensitive2

Access to where your device is, using GPS or network signals

Know roughly where you are, using mobile towers and Wi-Fi networksapproximate location (network-based) · ACCESS_COARSE_LOCATION
Know your exact location using GPS, Wi-Fi and mobile networksprecise location (GPS and network-based) · ACCESS_FINE_LOCATION

OtherRoutine1

Access to miscellaneous device features that don't fit other categories

Connect to the internet to load content and send datafull network access · INTERNET

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

Effective Year : -9,999~9,999 (20,000 years) Inquiry period for planet events(trace) : within the effective year range, free version up to 6 months (the Android V26.08 version is free-only). The iOS paid version allows up to 300 years. This is a lunisolar calendar, ephemeris, and star chart application. It calculates the accurate positions of the Sun, Moon, and planets on a minute scale, shown on the main month table, the day-detail screen, and the star chart. The star chart shows star positions from the Bright Star Catalogue and the Milky Way, along with Oriental and Western constellation information. It shows the Sun/Moon/planet positions at a specific moment on the star chart, and entering a duration in minutes shows their trace over that period. It calculates solar/lunar eclipses and various planetary events across the entire effective year range, shows the relevant date/time on the day-detail screen, and shows the event's position on the star chart. ## Features 1. The lunisolar, the Gregorian, the Julian day/date, the Islamic/Hebrew month, the sexagenary cycle(干支), 9-star(九星), Kimoon(奇門), 24 solar terms, new moon(with eclipse)/full moon(with eclipse)/first-last quarter/perigee-apogee/ascending-descending node, 28 mansions, Easter date (9-star and Kimoon are only shown for years 1880-2055.) 2. Calculates the Sun/Moon/planet positions and traces and specific events -- conjunction(inferior/superior), opposition, greatest elongation(East/West), quadrature(East/West), perihelion, aphelion, ascending/descending ecliptic node, planet(incl. Moon) conjunction, occultation -- shows the date/time on the day-detail screen and the position on the star chart. 3. Planetary layout, North/South-pole/current-position/Equinox-Equator/Sun-Ecliptic/Galactic-center star charts, each showing the individual Oriental(3-28 mansions) and Western(88) constellations. ## Version History - V26.08 (Android, Aug 31 2026) : Added iOS V3.5's features to Android - V3.5 (iOS, Nov 25 2020) : Added Occultation, Moon orbit(白道) star chart. New star chart types (Equinox/Equator, Sun/Ecliptic, Galactic, Oriental 3-28 Mansions, Western 88 Constellations). Added timezone selection. - V3.0 (iOS, Aug 13 2015) : Added the Milky Way and 110 Messier objects to the star chart - V2.5 (Android, May 12 2014) : Added Android star chart - V2.1 (iOS, Apr 2 2014) : Improved star chart query function, extended period - V2.0 (iOS, Jan 29 2014) : Added iOS star chart - V1.02 (Android, Oct 24 2012) : Server fix - V1.01 (Android, Sep 9 2011) : CAL20000 Android first version - V1.0 (iOS, Sep 6 2011) : CAL20000 iOS first version - V0.92 (Windows 1998) : Extended the query period from 8192 to 20,000 years, added solar/lunar eclipse calculation - V0.90 (Windows 1998) : CAL20000 Windows first version

What's new

Version History - V26.08 (Android, Aug 31 2026): Added iOS V3.5's features to Android - V3.5 (iOS, Nov 25 2020): Added Occultation & Moon-orbit star chart, new chart types (Equinox/Equator, Sun/Ecliptic, Galactic, Oriental/Western constellations), and timezone selection. - V3.0 (iOS, Aug 13 2015): Added the Milky Way and 110 Messier objects to the star chart - V2.5 (Android, May 12 2014): Added Android star chart - V2.1 (iOS, Apr 2 2014): Improved star chart query function, extended period

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