Well, the Hijri date 30 Rabi Al Awwal 1221 corresponds to the Gregorian date Monday, 16 June 1806. This date lies in the third month of the Hijri year 1221 AH, which is Rabi Al-Awwal of 1221 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1221/03/30 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 16 June 1806 to its equivalent Arabic date.
The following is the conversion of the Arabic date 30 Rabi Al Awwal 1221 AH to its equivalent Gregorian date.
وَلَوْ أَنَّهُمْ صَبَرُوا۟ حَتَّىٰ تَخْرُجَ إِلَيْهِمْ لَكَانَ خَيْرًۭا لَّهُمْ ۚ وَٱللَّهُ غَفُورٌۭ رَّحِيمٌۭ
And if they had had patience till thou camest forth unto them, it had been better for them. And Allah is Forgiving, Merciful.
Surah Al-Hujuraat(49:5)