Realtime Sun Image is taken by Solar and Heliospheric Observatory (SOHO) spacecraft.

Moon Phase Simulation is provided by www.moonconnection.com.

Realtime Sky Charts are produced using a service provided by http://www.fourmilab.ch/. Fourmilab is maintained by John Walker, founder of Autodesk, Inc and co-author of AutoCAD.

Weather Satellite Picture is taken by Kalpana-1 Satellite. It is sourced realtime from the Website of India Meteorological Department.

Weather Forecast for Kayalpatnam is provided by www.AccuWeather.com.

Sunrise/Sunset/Moonrise/Moonset modules are developed using formulae available in public domain.

Kayalpatnam Tide Predictions are generated using WXTide32 Software.

Qiblah Direction Finder timings are generated using Minaret Software developed by Dr.Kamal Abdali.

Crescent Visibility Maps are generated using Accurate Times Software developed by Mohammad Odeh.

For Visibility Predictions, www.moonsighting.com and South African Astronomical Observatory are used.

Prayer Timings for Kayalpatnam are from the data in use since the 1980s in Kayalpatnam.

Eclipse Reports are sourced from NASA's Official Eclipse Website.

Meteor Reports are sourced from www.earthsky.org.