Well, the Hijri date 13 Jumada Al Akhira 1278 corresponds to the Gregorian date Sunday, 15 December 1861. This date lies in the sixth month of the Hijri year 1278 AH, which is Jumada Al-Thani of 1278 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1278/06/13 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 15 December 1861 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Jumada Al Akhira 1278 AH to its equivalent Gregorian date.
وَإِذَا لَمْ تَأْتِهِم بِـَٔايَةٍۢ قَالُوا۟ لَوْلَا ٱجْتَبَيْتَهَا ۚ قُلْ إِنَّمَآ أَتَّبِعُ مَا يُوحَىٰٓ إِلَىَّ مِن رَّبِّى ۚ هَٰذَا بَصَآئِرُ مِن رَّبِّكُمْ وَهُدًۭى وَرَحْمَةٌۭ لِّقَوْمٍۢ يُؤْمِنُونَ
And when thou bringest not a verse for them they say: Why hast thou not chosen it? Say: I follow only that which is inspired in me from my Lord. This (Qur'an) is insight from your Lord, and a guidance and a mercy for a people that believe.
Surah Al-A'raaf(7:203)