Well, the Hijri date 21 Rabi Al Awwal 1155 corresponds to the Gregorian date Friday, 25 May 1742. This date lies in the third month of the Hijri year 1155 AH, which is Rabi Al-Awwal of 1155 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1155/03/21 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 25 May 1742 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Awwal 1155 AH to its equivalent Gregorian date.
قَالَ كَذَٰلِكِ قَالَ رَبُّكِ هُوَ عَلَىَّ هَيِّنٌۭ ۖ وَلِنَجْعَلَهُۥٓ ءَايَةًۭ لِّلنَّاسِ وَرَحْمَةًۭ مِّنَّا ۚ وَكَانَ أَمْرًۭا مَّقْضِيًّۭا
He said: So (it will be). Thy Lord saith: It is easy for Me. And (it will be) that We may make of him a revelation for mankind and a mercy from Us, and it is a thing ordained.
Surah Maryam(19:21)