Well, the Hijri date 6 Rabi Al Thani 1403 corresponds to the Gregorian date Thursday, 20 January 1983. This date lies in the fourth month of the Hijri year 1403 AH, which is Rabi Al-Thani of 1403 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1403/04/06 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 January 1983 to its equivalent Arabic date.
The following is the conversion of the Arabic date 6 Rabi Al Thani 1403 AH to its equivalent Gregorian date.
وَلَا تُؤْمِنُوٓا۟ إِلَّا لِمَن تَبِعَ دِينَكُمْ قُلْ إِنَّ ٱلْهُدَىٰ هُدَى ٱللَّهِ أَن يُؤْتَىٰٓ أَحَدٌۭ مِّثْلَ مَآ أُوتِيتُمْ أَوْ يُحَآجُّوكُمْ عِندَ رَبِّكُمْ ۗ قُلْ إِنَّ ٱلْفَضْلَ بِيَدِ ٱللَّهِ يُؤْتِيهِ مَن يَشَآءُ ۗ وَٱللَّهُ وَٰسِعٌ عَلِيمٌۭ
And believe not save in one who followeth your religion - Say (O Muhammad): Lo! the guidance is Allah's Guidance - that anyone is given the like of that which was given unto you or that they may argue with you in the presence of their Lord. Say (O Muhammad): Lo! the bounty is in Allah's hand. He bestoweth it on whom He will. Allah is All-Embracing, All-Knowing.
Surah Aal-i-Imraan(3:73)
Sahih al-Bukhari
Funerals (Al-Janaa'iz)
Chapter: Who may get down in the grave of a woman
Narrated Anas:
We were in the funeral procession of the daughter of Allah's Messenger (ﷺ) and Allah's Messenger (ﷺ) was sitting near the grave and I saw his eyes full of tears. He said, "Is there anyone amongst you who did not have sexual relations with his wife last night?" Abu Talha replied in the affirmative. And so Allah's Apostle told him to get down in her grave and he got down in her grave and buried her.
Sahih al-Bukhari 1342