If you eat and drink after imsak time because your clock was wrong, is fasting invalidated and does it necessitate qada (performing it again as one day?

When I woke up for suhoor, I saw that imsak had not started according to my table clock. After I ate suhoor, I realized that I had seen the time wrong and that imsak time had started when I had suhoor...

Dear Brother / Sister,

Fasting begins with the dawn, when the time of imsak starts. After this time, no food can be eaten, nothing can be drunk and nothing that invalidates fasting can be done. Therefore, the fasting person must eat before the time of imsak. This meal before imsak is called «suhoor»“.

Since fasting starts when the time of imsak starts, you have to perform fasting for one day as qada.

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