Well, the Hijri date 16 Rabi Al Thani 1390 corresponds to the Gregorian date Saturday, 20 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 Saturday without any doubt. The Arabic date 1390/04/16 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 20 June 1970 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Rabi Al Thani 1390 AH to its equivalent Gregorian date.
وَيَقُولُونَ أَئِنَّا لَتَارِكُوٓا۟ ءَالِهَتِنَا لِشَاعِرٍۢ مَّجْنُونٍۭ
And said: Shall we forsake our gods for a mad poet?
Surah As-Saaffaat(37:36)
Sahih al-Bukhari
Retiring to a Mosque for Remembrance of Allah (I'tikaf)
Chapter: Mu'takif going to the gate of the mosque.
Narrated `Ali bin Al-Husain:
Safiya, the wife of the Prophet (ﷺ) told me that she went to Allah's Messenger (ﷺ) to visit him in the mosque while he was in I`tikaf in the last ten days of Ramadan. She had a talk with him for a while, then she got up in order to return home. The Prophet (ﷺ) accompanied her. When they reached the gate of the mosque, opposite the door of Um-Salama, two Ansari men were passing by and they greeted Allah's Apostle . He told them: Do not run away! And said, "She is (my wife) Safiya bint Huyai." Both of them said, "Subhan Allah, (How dare we think of any evil) O Allah's Messenger (ﷺ)!" And they felt it. The Prophet said (to them), "Satan reaches everywhere in the human body as blood reaches in it, (everywhere in one's body). I was afraid lest Satan might insert an evil thought in your minds."
Sahih al-Bukhari 2035