Well, the Hijri date 16 Muharram 1421 corresponds to the Gregorian date Friday, 21 April 2000. This date lies in the first month of the Hijri year 1421 AH, which is Muharram of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1421/01/16 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 April 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Muharram 1421 AH to its equivalent Gregorian date.
وَيَوْمَ يُعْرَضُ ٱلَّذِينَ كَفَرُوا۟ عَلَى ٱلنَّارِ أَذْهَبْتُمْ طَيِّبَٰتِكُمْ فِى حَيَاتِكُمُ ٱلدُّنْيَا وَٱسْتَمْتَعْتُم بِهَا فَٱلْيَوْمَ تُجْزَوْنَ عَذَابَ ٱلْهُونِ بِمَا كُنتُمْ تَسْتَكْبِرُونَ فِى ٱلْأَرْضِ بِغَيْرِ ٱلْحَقِّ وَبِمَا كُنتُمْ تَفْسُقُونَ
And on the day when those who disbelieve are exposed to the Fire (it will be said): Ye squandered your good things in the life of the world and sought comfort therein. Now this day ye are rewarded with the doom of ignominy because ye were disdainful in the land without a right, and because ye used to transgress.
Surah Al-Ahqaf(46:20)
Sahih al-Bukhari
Prophets
Chapter: The creation of Adam and his offspring
Narrated Abu Huraira:
The Prophet (ﷺ) said, "But for the Israelis, meat would not decay and but for Eve, wives would never betray their husbands."
Sahih al-Bukhari 3330