Well, the Hijri date 10 Rajab 1398 corresponds to the Gregorian date Thursday, 15 June 1978. This date lies in the seventh month of the Hijri year 1398 AH, which is Rajab of 1398 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1398/07/10 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 June 1978 to its equivalent Arabic date.
The following is the conversion of the Arabic date 10 Rajab 1398 AH to its equivalent Gregorian date.
قَٰتِلُوا۟ ٱلَّذِينَ لَا يُؤْمِنُونَ بِٱللَّهِ وَلَا بِٱلْيَوْمِ ٱلْءَاخِرِ وَلَا يُحَرِّمُونَ مَا حَرَّمَ ٱللَّهُ وَرَسُولُهُۥ وَلَا يَدِينُونَ دِينَ ٱلْحَقِّ مِنَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ حَتَّىٰ يُعْطُوا۟ ٱلْجِزْيَةَ عَن يَدٍۢ وَهُمْ صَٰغِرُونَ
Fight against such of those who have been given the Scripture as believe not in Allah nor the Last Day, and forbid not that which Allah hath forbidden by His messenger, and follow not the Religion of Truth, until they pay the tribute readily, being brought low.
Surah At-Tawba(9:29)