Well, the Hijri date 26 Muharram 1398 corresponds to the Gregorian date Thursday, 5 January 1978. This date lies in the first month of the Hijri year 1398 AH, which is Muharram of 1398 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1398/01/26 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 5 January 1978 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Muharram 1398 AH to its equivalent Gregorian date.
ثُمَّ قَفَّيْنَا عَلَىٰٓ ءَاثَٰرِهِم بِرُسُلِنَا وَقَفَّيْنَا بِعِيسَى ٱبْنِ مَرْيَمَ وَءَاتَيْنَٰهُ ٱلْإِنجِيلَ وَجَعَلْنَا فِى قُلُوبِ ٱلَّذِينَ ٱتَّبَعُوهُ رَأْفَةًۭ وَرَحْمَةًۭ وَرَهْبَانِيَّةً ٱبْتَدَعُوهَا مَا كَتَبْنَٰهَا عَلَيْهِمْ إِلَّا ٱبْتِغَآءَ رِضْوَٰنِ ٱللَّهِ فَمَا رَعَوْهَا حَقَّ رِعَايَتِهَا ۖ فَـَٔاتَيْنَا ٱلَّذِينَ ءَامَنُوا۟ مِنْهُمْ أَجْرَهُمْ ۖ وَكَثِيرٌۭ مِّنْهُمْ فَٰسِقُونَ
Then We caused Our messengers to follow in their footsteps; and We caused Jesus, son of Mary, to follow, and gave him the Gospel, and placed compassion and mercy in the hearts of those who followed him. But monasticism they invented - We ordained it not for them - only seeking Allah's pleasure, and they observed it not with right observance. So We give those of them who believe their reward, but many of them are evil-livers.
Surah Al-Hadid(57:27)