Well, the Hijri date 4 Rabi Al Awwal 1400 corresponds to the Gregorian date Monday, 21 January 1980. This date lies in the third month of the Hijri year 1400 AH, which is Rabi Al-Awwal of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1400/03/04 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 21 January 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 4 Rabi Al Awwal 1400 AH to its equivalent Gregorian date.
سَابِقُوٓا۟ إِلَىٰ مَغْفِرَةٍۢ مِّن رَّبِّكُمْ وَجَنَّةٍ عَرْضُهَا كَعَرْضِ ٱلسَّمَآءِ وَٱلْأَرْضِ أُعِدَّتْ لِلَّذِينَ ءَامَنُوا۟ بِٱللَّهِ وَرُسُلِهِۦ ۚ ذَٰلِكَ فَضْلُ ٱللَّهِ يُؤْتِيهِ مَن يَشَآءُ ۚ وَٱللَّهُ ذُو ٱلْفَضْلِ ٱلْعَظِيمِ
Race one with another for forgiveness from your Lord and a Garden whereof the breadth is as the breadth of the heavens and the earth, which is in store for those who believe in Allah and His messengers. Such is the bounty of Allah, which He bestoweth upon whom He will, and Allah is of Infinite Bounty.
Surah Al-Hadid(57:21)