Zero Shadow Day (ZSD)
- Several districts in West Bengal, including Kolkata, Howrah, Hooghly, and others, will witness the rare astronomical phenomenon of Zero Shadow Day (ZSD) in June and July 2025.
- ZSD occurs twice a year in locations between the Tropic of Cancer and the Equator, when the Sun is exactly overhead at local noon, causing vertical objects to cast no shadow.
- The phenomenon is a result of the Sun’s declination matching the latitude of a given location, making it a direct overhead event for a brief period around solar noon.
- Though ZSD has no meteorological effect, it visually demonstrates the Earth’s axial ....
Do You Want to Read More?
Subscribe Now
To get access to detailed content
Already a Member? Login here
Take Annual Subscription and get the following Advantage
The annual members of the Civil Services Chronicle can read the monthly content of the magazine as well as the Chronicle magazine archives.
Readers can study all the material since 2018 of the Civil Services Chronicle monthly issue in the form of Chronicle magazine archives.
Science & Technology
- 1 Germanium-Free Thermal Imaging Payload for Drones
- 2 TARA Glide Weapon System
- 3 ‘Drishti’: World's First OptoSAR EO Satellite
- 4 Solar Corona
- 5 ISRO partners with Sweden for ‘Shukrayaan’ Mission
- 6 ISRO Study Reveals New Insights into Moon’s Lunar Regolith
- 7 SMILE Space Mission
- 8 ‘Mahendragiri’: Indigenous Advanced Stealth Frigate
- 9 Trans-Neptunian Object 2002 XV93
- 10 Successful Trials of ULPGM-V3 Missile
