Well, the Hijri date 1 Dhul Hijjah 1390 corresponds to the Gregorian date Wednesday, 27 January 1971. This date lies in the twelfth month of the Hijri year 1390 AH, which is Dhu Al-Hijjah of 1390 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1390/12/01 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 27 January 1971 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Dhul Hijjah 1390 AH to its equivalent Gregorian date.
وَتَرَىٰ كُلَّ أُمَّةٍۢ جَاثِيَةًۭ ۚ كُلُّ أُمَّةٍۢ تُدْعَىٰٓ إِلَىٰ كِتَٰبِهَا ٱلْيَوْمَ تُجْزَوْنَ مَا كُنتُمْ تَعْمَلُونَ
And thou wilt see each nation crouching, each nation summoned to its record. (And it will be said unto them): This day ye are requited what ye used to do.
Surah Al-Jaathiya(45:28)