Well, the Hijri date 10 Rabi Al Thani 1399 corresponds to the Gregorian date Thursday, 8 March 1979. This date lies in the fourth month of the Hijri year 1399 AH, which is Rabi Al-Thani of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1399/04/10 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 8 March 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 10 Rabi Al Thani 1399 AH to its equivalent Gregorian date.
وَمَآ أَرْسَلْنَا مِن قَبْلِكَ إِلَّا رِجَالًۭا نُّوحِىٓ إِلَيْهِمْ ۚ فَسْـَٔلُوٓا۟ أَهْلَ ٱلذِّكْرِ إِن كُنتُمْ لَا تَعْلَمُونَ
And We sent not (as Our messengers) before thee other than men whom We inspired - Ask the followers of the Remembrance if ye know not! -
Surah An-Nahl(16:43)
Sahih al-Bukhari
Virtues of the Qur'an
Chapter: The scribe of the Prophet (saws)
Narrated Zaid bin Thabit:
Abu Bakr sent for me and said, "You used to write the Divine Revelations for Allah's Messenger (ﷺ) : So you should search for (the Qur'an and collect) it." I started searching for the Qur'an till I found the last two Verses of Surat at-Tauba with Abi Khuza`ima Al-Ansari and I could not find these Verses with anybody other than him. (They were): 'Verily there has come unto you an Apostle (Muhammad) from amongst yourselves. It grieves him that you should receive any injury or difficulty ...' (9.128-129)
Sahih al-Bukhari 4989