I need an iPhone/iPad app. I would like it designed and built.
This app will contain all the sunrise and sunset timings worldwide for the next 100 years. (Incl all major cities).
It must be able to accurately show when the sunrise and sunset times are for travelers, within 10 minutes accuracy.
A person traveling from Singapore to London, if he departs on 20th June 0100UTC and reaches London on 20th June 1400UTC, the app must be able to tell what time the sun will rise along his flight path. And also vice versa if he departs in the morning and arrives at night, the app must be able to tell him what time is sunset, and also if the flight goes thru both sunrise and sunset.