Well, the Hijri date 13 Shawwal 1412 corresponds to the Gregorian date Thursday, 16 April 1992. This date lies in the tenth month of the Hijri year 1412 AH, which is Shawwal of 1412 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1412/10/13 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 16 April 1992 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1412 AH to its equivalent Gregorian date.
ذَٰلِكَ بِأَنَّهُمْ شَآقُّوا۟ ٱللَّهَ وَرَسُولَهُۥ ۚ وَمَن يُشَاقِقِ ٱللَّهَ وَرَسُولَهُۥ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ
That is because they opposed Allah and His messenger. Whoso opposeth Allah and His messenger, (for him) lo! Allah is severe in punishment.
Surah Al-Anfaal(8:13)
Sahih al-Bukhari
Divorce
Chapter: A mourning lady can wear clothes of 'Asb.
Narrated Um 'Atiyya:
The Prophet (ﷺ) said, "It is not lawful for a lady who believes in Allah and the Last Day, to mourn for more than three days for a dead person, except for her husband, in which case she should neither put kohl in her eyes, nor perfume herself, nor wear dyed clothes, except a garment of 'Asb"
Sahih al-Bukhari 5342