Well, the Hijri date 28 Rabi Al Thani 1387 corresponds to the Gregorian date Friday, 4 August 1967. This date lies in the fourth month of the Hijri year 1387 AH, which is Rabi Al-Thani of 1387 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1387/04/28 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 4 August 1967 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Rabi Al Thani 1387 AH to its equivalent Gregorian date.
وَٱلَّذِينَ ءَاتَيْنَٰهُمُ ٱلْكِتَٰبَ يَفْرَحُونَ بِمَآ أُنزِلَ إِلَيْكَ ۖ وَمِنَ ٱلْأَحْزَابِ مَن يُنكِرُ بَعْضَهُۥ ۚ قُلْ إِنَّمَآ أُمِرْتُ أَنْ أَعْبُدَ ٱللَّهَ وَلَآ أُشْرِكَ بِهِۦٓ ۚ إِلَيْهِ أَدْعُوا۟ وَإِلَيْهِ مَـَٔابِ
Those unto whom We gave the Scripture rejoice in that which is revealed unto thee. And of the clans there are who deny some of it. Say: I am commanded only that I serve Allah and ascribe unto Him no partner. Unto Him I cry, and unto Him is my return.
Surah Ar-Ra'd(13:36)