Well, the Hijri date 20 Rabi Al Thani 1390 corresponds to the Gregorian date Wednesday, 24 June 1970. This date lies in the fourth month of the Hijri year 1390 AH, which is Rabi Al-Thani of 1390 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1390/04/20 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 24 June 1970 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1390 AH to its equivalent Gregorian date.
قَالَ أَبَشَّرْتُمُونِى عَلَىٰٓ أَن مَّسَّنِىَ ٱلْكِبَرُ فَبِمَ تُبَشِّرُونَ
He said: Bring ye me good tidings (of a son) when old age hath overtaken me? Of what then can ye bring good tidings?
Surah Al-Hijr(15:54)
Sahih al-Bukhari
Oaths and Vows
Chapter: How did the oaths of the Prophet (saws) use to be?
Narrated `Abdullah bin Masud:
While Allah's Messenger (ﷺ) was sitting, reclining his back against a Yemenite leather tent he said to his companions, "Will you be pleased to be one-fourth of the people of Paradise?" They said, 'Yes.' He said "Won't you be pleased to be one-third of the people of Paradise" They said, "Yes." He said, "By Him in Whose Hand Muhammad's soul is, I hope that you will be one-half of the people of Paradise."
Sahih al-Bukhari 6642
