Well, the Hijri date 12 Rabi Al Thani 1419 corresponds to the Gregorian date Tuesday, 4 August 1998. This date lies in the fourth month of the Hijri year 1419 AH, which is Rabi Al-Thani of 1419 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1419/04/12 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 4 August 1998 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Rabi Al Thani 1419 AH to its equivalent Gregorian date.
رَّبُّكُمْ أَعْلَمُ بِمَا فِى نُفُوسِكُمْ ۚ إِن تَكُونُوا۟ صَٰلِحِينَ فَإِنَّهُۥ كَانَ لِلْأَوَّٰبِينَ غَفُورًۭا
Your Lord is Best Aware of what is in your minds. If ye are righteous, then lo! He was ever Forgiving unto those who turn (unto Him).
Surah Al-Israa(17:25)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: When did the Muslim calendar start?
Narrated Sahl bin Sa`d:
The Prophet's companions did not take as a starting date for the Muslim calendar, the day, the Prophet (ﷺ) had been sent as an Apostle or the day of his death, but the day of his arrival at Medina.
Sahih al-Bukhari 3934