Well, the Hijri date 11 Muharram 1387 corresponds to the Gregorian date Thursday, 20 April 1967. This date lies in the first month of the Hijri year 1387 AH, which is Muharram of 1387 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1387/01/11 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 1967 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Muharram 1387 AH to its equivalent Gregorian date.
وَيْلٌۭ لِّكُلِّ أَفَّاكٍ أَثِيمٍۢ
Woe unto each sinful liar,
Surah Al-Jaathiya(45:7)