First case: taking suhur after true dawn, believing it was still night.
Second case: breaking the fast before actual sunset, believing evening had begun.
Decisive condition: the time error is subsequently established.
Quduri’s ruling: make up the day, with no special kaffarah for this error.
Commentary clarification: also abstain for the remaining daylight, if any.
The next level turns to the Eid crescent and rules of testimony.