Zero Shadow Day4.2 - Google Play
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Publisher Description
Find out the zero shadow day for any location. All info about Zero Shadow Days.
Zero Shadow is a phenomenon when the sun is exactly overhead and the shadows of symmetrical and vertical objects vanishes. This happens for locations between the tropics and is caused by the northern and southern motion of the sun during the course of a year. This app helps you find the Zero Shadow Day for any location.
If you are between Tropic of Cancer and Tropic of Capricorn, then on a particular day (one during Uttarayan and other during Dakshinayan) the Sun will pass directly overhead at local noon. At local noon on this day, a vertical pole will cast no shadow. These are called Zero Shadow Days, or ZSD. This app is an aid to the campaign by the Public Outreach and Education Committee of the Astronomical Society of India for celebrating ZSD.
Inputs and Content by
Dr. Niruj Mohan Ramanujam, ASI POEC
Translations by:
Kannada
- Dr B.S. Shylaja of Jawaharlal Nehru Planetarium Bengaluru and Mrs. Jyotsna
Telugu
- Teja Teppala
Marathi
- Dr. Aniket Sule, HBCSE, ASI POEC.
Hindi
- Alok Mandavgane
Spanish
- Alvaro Jose Cano Mejia from Colombia
Portuguese Brazilian
- José Roberto Vasconcelos Costa
About Zero Shadow Day
The company that develops Zero Shadow Day is Alok Mandavgane. The latest version released by its developer is 4.2.
To install Zero Shadow Day on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-08-06 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Zero Shadow Day as malware as malware if the download link to com.alokm.zsd is broken.
How to install Zero Shadow Day on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Zero Shadow Day is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Zero Shadow Day will be shown. Click on Accept to continue the process.
- Zero Shadow Day will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 4.2
posted on 2026-08-06
Overhauled the design of the app.
The home page now tell about the next zsd event.
ZSM page animations updated to show globe view.
version 3.2.5
posted on 2025-10-18
Bug fix for ZSD Finder crash.
Added missing translations
version 3.2.3
posted on 2025-07-20
attempt to fix crashes on several devices
fix for location bug. location set to 0,0 if not set
version 3.2
posted on 2025-06-22
Update to 3.2
Support for larger devices and landscape mode.
Interactive scroll on date added.
version 2.4
posted on 2024-04-23
Fix for zsd info not showing.
Now you can calculate distance between two places by long pressing on other location. The shortest distance from the chosen location will be shown in the zsd info page
version 2.3
posted on 2024-03-30
Gnomon and shadow added back in Visualization
UI Changes, colours are now uniform in UI
version 2.2
posted on 2023-08-20
Bug fixes, and UI enhancements
version 2.0
posted on 2022-10-19
Upgrade to Material You Theme
Haptics added for slider change
Day night shown in 3d visualization
version 1.6.4
posted on 2020-04-22
Fix for one day shift error in dates.
Disclaimer
Official Google Play Link
We do not host Zero Shadow Day on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
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