I say, and with God's success: First: The preferred time for the Fajr prayer: It is preferred to begin it at dawn, and dawn is when the light of Fajr has brightened completely, such that one can recite forty verses or more. Then, if there is any doubt about the validity of his ablution, he should repeat the prayer. It is preferred to pray Fajr at dawn both while traveling and at home, in summer and winter, except on the day of Muzdalifah, where it is better to pray in darkness. Second: The preferred time for the Dhuhr prayer: It is preferred to delay the Dhuhr prayer in summer and to hasten it in winter. Third: The preferred time for the Asr prayer: If the sky is clear, it is preferred to delay Asr until the sun changes – that is, when it turns yellow and weakens to the point that the eye can look directly at it – but if the sky is cloudy, it is preferred to hasten Asr; because delaying it may lead to the misconception of it being prayed during the disliked time. Fourth: The preferred time for the Maghrib prayer: It is preferred to hasten it, except if the sky is cloudy, in which case it should be delayed; to avoid praying before the time. Fifth: The preferred time for the Isha prayer: If the sky is clear, it is preferred to delay Isha until a third of the night, but if the sky is cloudy, it is preferred to hasten Isha; because delaying it may reduce the congregation due to the rain. Sixth: The preferred time for the Witr prayer: It is preferred to delay Witr until the end of the Isha time for those who are confident they will wake up; to serve as a conclusion to the night prayers. Refer to: Al-Waqayah p. 137, and Tabyeen Al-Haqaiq 1: 84, and God knows best.