Well, the Hijri date 15 Jumada Al Oula 1400 corresponds to the Gregorian date Monday, 31 March 1980. This date lies in the fifth month of the Hijri year 1400 AH, which is Jumada Al-Awwal of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1400/05/15 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 31 March 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Jumada Al Oula 1400 AH to its equivalent Gregorian date.
ٱلَّذِى لَهُۥ مُلْكُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَلَمْ يَتَّخِذْ وَلَدًۭا وَلَمْ يَكُن لَّهُۥ شَرِيكٌۭ فِى ٱلْمُلْكِ وَخَلَقَ كُلَّ شَىْءٍۢ فَقَدَّرَهُۥ تَقْدِيرًۭا
He unto Whom belongeth the Sovereignty of the heavens and the earth, He hath chosen no son nor hath He any partner in the Sovereignty. He hath created everything and hath meted out for it a measure.
Surah Al-Furqaan(25:2)