Well, the Hijri date 20 Rajab 1400 corresponds to the Gregorian date Tuesday, 3 June 1980. This date lies in the seventh month of the Hijri year 1400 AH, which is Rajab of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1400/07/20 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 3 June 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rajab 1400 AH to its equivalent Gregorian date.
۞ وَلَوْ أَنَّنَا نَزَّلْنَآ إِلَيْهِمُ ٱلْمَلَٰٓئِكَةَ وَكَلَّمَهُمُ ٱلْمَوْتَىٰ وَحَشَرْنَا عَلَيْهِمْ كُلَّ شَىْءٍۢ قُبُلًۭا مَّا كَانُوا۟ لِيُؤْمِنُوٓا۟ إِلَّآ أَن يَشَآءَ ٱللَّهُ وَلَٰكِنَّ أَكْثَرَهُمْ يَجْهَلُونَ
And though We should send down the angels unto them, and the dead should speak unto them, and We should gather against them all things in array, they would not believe unless Allah so willed. Howbeit, most of them are ignorant.
Surah Al-An'aam(6:111)
Sahih al-Bukhari
Wedlock, Marriage (Nikaah)
Chapter: Al-Ghaira (i.e. honour, prestige or self-respect)
Narrated Abu Huraira:
The Prophet; said, "Allah has a sense of Ghira, and Allah's sense of Ghira is provoked when a believer does something which Allah has prohibited."
Sahih al-Bukhari 5223