Well, the Hijri date 20 Rabi Al Thani 1411 corresponds to the Gregorian date Wednesday, 7 November 1990. This date lies in the fourth month of the Hijri year 1411 AH, which is Rabi Al-Thani of 1411 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1411/04/20 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 7 November 1990 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1411 AH to its equivalent Gregorian date.
لِيَجْزِىَ ٱللَّهُ كُلَّ نَفْسٍۢ مَّا كَسَبَتْ ۚ إِنَّ ٱللَّهَ سَرِيعُ ٱلْحِسَابِ
That Allah may repay each soul what it hath earned. Lo! Allah is swift at reckoning.
Surah Ibrahim(14:51)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: The Dhikr (remembering Allah by Glorifying, Praising and Magnifying Him) after As-Salat (the prayer)
Narrated Ibn `Abbas:
I used to recognize the completion of the prayer of the Prophet (ﷺ) by hearing Takbir.
Sahih al-Bukhari 842