Well, the Hijri date 15 Shaban 1142 corresponds to the Gregorian date Saturday, 4 March 1730. This date lies in the eighth month of the Hijri year 1142 AH, which is Shaban of 1142 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1142/08/15 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 4 March 1730 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Shaban 1142 AH to its equivalent Gregorian date.
ثُمَّ أَوْحَيْنَآ إِلَيْكَ أَنِ ٱتَّبِعْ مِلَّةَ إِبْرَٰهِيمَ حَنِيفًۭا ۖ وَمَا كَانَ مِنَ ٱلْمُشْرِكِينَ
And afterward We inspired thee (Muhammad, saying): Follow the religion of Abraham, as one by nature upright. He was not of the idolaters.
Surah An-Nahl(16:123)