Well, the Hijri date 24 Shaban 1400 corresponds to the Gregorian date Sunday, 6 July 1980. This date lies in the eighth month of the Hijri year 1400 AH, which is Shaban of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1400/08/24 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 6 July 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 24 Shaban 1400 AH to its equivalent Gregorian date.
قَالُوا۟ سَمِعْنَا فَتًۭى يَذْكُرُهُمْ يُقَالُ لَهُۥٓ إِبْرَٰهِيمُ
They said: We heard a youth make mention of them, who is called Abraham.
Surah Al-Anbiyaa(21:60)
Sahih al-Bukhari
Wedlock, Marriage (Nikaah)
Chapter: "(It is prohibited to have) two sisters in wedlock at the same time..."
Narrated Um Habiba:
I said, "O Allah's Messenger (ﷺ)! Marry my sister, the daughter of Abu Sufyan." He said, "Do you like that?" I said, "Yes, for even now I am not your only wife; and the most beloved person to share the good with me is my sister." The Prophet (ﷺ) said, "But that is not lawful for me (i.e., to be married to two sisters at a time.)" I said, "O Allah's Messenger (ﷺ)! By Allah, we have heard that you want to marry Durra, the daughter of Abu Salama." He said, "You mean the daughter of Um Salama?" I said, "Yes." He said, "By Allah ! Even if she were not my stepdaughter, she would not be lawful for me to marry, for she is my foster niece, for Thuwaiba has suckled me and Abu Salama; so you should neither present your daughters, nor your sisters to me."
Sahih al-Bukhari 5107