Well, the Hijri date 12 Rabi Al Awwal 1286 corresponds to the Gregorian date Monday, 21 June 1869. This date lies in the third month of the Hijri year 1286 AH, which is Rabi Al-Awwal of 1286 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1286/03/12 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 21 June 1869 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Rabi Al Awwal 1286 AH to its equivalent Gregorian date.
نَّحْنُ أَعْلَمُ بِمَا يَقُولُونَ إِذْ يَقُولُ أَمْثَلُهُمْ طَرِيقَةً إِن لَّبِثْتُمْ إِلَّا يَوْمًۭا
We are Best Aware of what they utter when their best in conduct say: Ye have tarried but a day.
Surah Taa-Haa(20:104)