New iPhone application

[islamtech]

Hello,

Students at GaTech have developed a new iPhone app. that prompts Muslims to their prayer times. The project was a collaboration between Muslim and non-Muslim students and a great learning experience for all!

Our application, Sun Dial is unlike similar systems because it relies on imagery, rather than text and graphs to communicate prayer times. The sun’s gentle movement through the sky prompts Muslim users to their five daily prayer times. Users’ drove this choice, by telling us that tracking the sun was the most religiously valued method to determine prayer times. Additionally, our system was developed for Muslims practicing in the United States, who told us that they have different needs from those living in regions where Islam is more widely practiced.

[Beardo]

Could you post an article on how exactly the sun can be calculated without using a compass or any device? Purely based off the naked eye and observation of shadows etc.