Well, the Hijri date 15 Shawwal 1311 corresponds to the Gregorian date Friday, 20 April 1894. This date lies in the tenth month of the Hijri year 1311 AH, which is Shawwal of 1311 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1311/10/15 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 20 April 1894 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Shawwal 1311 AH to its equivalent Gregorian date.
۞ وَهُوَ ٱلَّذِى مَرَجَ ٱلْبَحْرَيْنِ هَٰذَا عَذْبٌۭ فُرَاتٌۭ وَهَٰذَا مِلْحٌ أُجَاجٌۭ وَجَعَلَ بَيْنَهُمَا بَرْزَخًۭا وَحِجْرًۭا مَّحْجُورًۭا
And He it is Who hath given independence to the two seas (though they meet); one palatable, sweet, and the other saltish, bitter; and hath set a bar and a forbidding ban between them.
Surah Al-Furqaan(25:53)