Well, the Hijri date 15 Rabi Al Awwal 1278 corresponds to the Gregorian date Thursday, 19 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 Thursday without any doubt. The Arabic date 1278/03/15 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 19 September 1861 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Awwal 1278 AH to its equivalent Gregorian date.
وَأَذِنَتْ لِرَبِّهَا وَحُقَّتْ
And attentive to her Lord in fear!
Surah Al-Inshiqaaq(84:5)