What does it mean that the crescent of Muharram was not sighted after sunset on the 29th night of Dhul-Hijjah, but was sighted during the day through astronomical imaging technology, and then clearly seen after sunset on the following day? And when was the beginning of Muharram, knowing that the 2nd of Muharram according to the Umm Al-Qura calendar is the 1st of Muharram according to the sighting?

We have previously clarified that it is impermissible to rely on astronomical calculations for determining the beginning and end of lunar months, and that what is considered is the confirmation of the crescent moon through legitimate sighting, as determined by the competent authority. If the competent authority in your country announced the sighting of the Muharram crescent on Thursday or Wednesday, then it is according to their announcement. If your country relies on Saudi Arabia's sighting of the crescent, then Saudi Arabia announced that Thursday, October 15, 2015, is the first day of Muharram 1437 AH. We would like to point out that sighting the crescent during the day does not validate it for the previous night, but rather for the upcoming night.