Well, the Hijri date 14 Dhul Qidah 1143 corresponds to the Gregorian date Sunday, 20 May 1731. This date lies in the eleventh month of the Hijri year 1143 AH, which is Dhu Al-Qidah of 1143 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1143/11/14 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 20 May 1731 to its equivalent Arabic date.
The following is the conversion of the Arabic date 14 Dhul Qidah 1143 AH to its equivalent Gregorian date.
يَوْمَئِذٍۢ يَصْدُرُ ٱلنَّاسُ أَشْتَاتًۭا لِّيُرَوْا۟ أَعْمَٰلَهُمْ
That day mankind will issue forth in scattered groups to be shown their deeds.
Surah Az-Zalzala(99:6)