Well, the Hijri date 28 Dhul Hijjah 1421 corresponds to the Gregorian date Friday, 23 March 2001. This date lies in the twelfth month of the Hijri year 1421 AH, which is Dhu Al-Hijjah of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1421/12/28 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 23 March 2001 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Dhul Hijjah 1421 AH to its equivalent Gregorian date.
قُلْ إِنَّ ٱلْأَوَّلِينَ وَٱلْءَاخِرِينَ
Say (unto them, O Muhammad): Lo! those of old and those of later time
Surah Al-Waaqia(56:49)