Well, the Hijri date 13 Jumada Al Oula 1397 corresponds to the Gregorian date Sunday, 1 May 1977. This date lies in the fifth month of the Hijri year 1397 AH, which is Jumada Al-Awwal of 1397 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1397/05/13 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 1 May 1977 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Jumada Al Oula 1397 AH to its equivalent Gregorian date.
فَذَكِّرْ إِنَّمَآ أَنتَ مُذَكِّرٌۭ
Remind them, for thou art but a remembrancer,
Surah Al-Ghaashiya(88:21)