Well, the Hijri date 18 Rabi Al Awwal 1278 corresponds to the Gregorian date Sunday, 22 September 1861. This date lies in the third month of the Hijri year 1278 AH, which is Rabi Al-Awwal of 1278 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1278/03/18 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 22 September 1861 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rabi Al Awwal 1278 AH to its equivalent Gregorian date.
وَنَجَّيْنَٰهُمَا وَقَوْمَهُمَا مِنَ ٱلْكَرْبِ ٱلْعَظِيمِ
And saved them and their people from the great distress,
Surah As-Saaffaat(37:115)