Well, the Hijri date 28 Muharram 1387 corresponds to the Gregorian date Sunday, 7 May 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 Sunday without any doubt. The Arabic date 1387/01/28 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 7 May 1967 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Muharram 1387 AH to its equivalent Gregorian date.
وَإِذْ أَسَرَّ ٱلنَّبِىُّ إِلَىٰ بَعْضِ أَزْوَٰجِهِۦ حَدِيثًۭا فَلَمَّا نَبَّأَتْ بِهِۦ وَأَظْهَرَهُ ٱللَّهُ عَلَيْهِ عَرَّفَ بَعْضَهُۥ وَأَعْرَضَ عَنۢ بَعْضٍۢ ۖ فَلَمَّا نَبَّأَهَا بِهِۦ قَالَتْ مَنْ أَنۢبَأَكَ هَٰذَا ۖ قَالَ نَبَّأَنِىَ ٱلْعَلِيمُ ٱلْخَبِيرُ
When the Prophet confided a fact unto one of his wives and when she afterward divulged it and Allah apprised him thereof, he made known (to her) part thereof and passed over part. And when he told it her she said: Who hath told thee? He said: The Knower, the Aware hath told me.
Surah At-Tahrim(66:3)