Well, the Hijri date 21 Safar 1398 corresponds to the Gregorian date Monday, 30 January 1978. This date lies in the second month of the Hijri year 1398 AH, which is Safar of 1398 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1398/02/21 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 30 January 1978 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Safar 1398 AH to its equivalent Gregorian date.
فَلَمَّا جَآءَهُمُ ٱلْحَقُّ مِنْ عِندِنَا قَالُوا۟ لَوْلَآ أُوتِىَ مِثْلَ مَآ أُوتِىَ مُوسَىٰٓ ۚ أَوَلَمْ يَكْفُرُوا۟ بِمَآ أُوتِىَ مُوسَىٰ مِن قَبْلُ ۖ قَالُوا۟ سِحْرَانِ تَظَٰهَرَا وَقَالُوٓا۟ إِنَّا بِكُلٍّۢ كَٰفِرُونَ
But when there came unto them the Truth from Our presence, they said: Why is he not given the like of what was given unto Moses? Did they not disbelieve in that which was given unto Moses of old? They say: Two magics that support each other; and they say: Lo! in both we are disbelievers.
Surah Al-Qasas(28:48)