Yes, he must make up for that day and repent to Allah.

A friend is in a dillema. He thought his fast was nullified then he did the secret habit. Then found out that his fast wasn’t nullified. Should he redo the day for doing this ?

Fasting | July 13, 2014 9:21 pm
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Which Athan the one for Suhoor or Fajr? Because over here in Saudi Arabia there is Only Fajr Athan no Athan for Suhoor like in Madinah and Makkah so we should stop as we hear fajr athan ryt??
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In Jeddah/Makkah/Medinah the dawn start when the adhan is called or before? And is it permissible to drink whilst fajr adhan is going on?