ANSWER:

If your local mosque doesn’t rely on visually seeing the sunset, you can follow the app. 

I have the app muslim pro the magrib athan is 8:49pm. The mosque in my citiy use magrib 8:53pm. I think the time frome my app is more right. In a other city the mosque use also the app for the time of prayer. My question now, what time can i break my fast and pray magrib? the 3 situations: I am at home, I hame in the mosque in my city, i am in mosque in the other city. Can i eat 8:49pm?

Fasting | May 20, 2018 5:41 am
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My 13 yr old son who’s matured last month was sick (fever) and couldn’t fast for first two days of Ramadan what is the kaffara for him. Does he has to make up his fast after Ramadan and also give kaffara for that missed fast?