Well, the Hijri date 28 Muharram 1421 corresponds to the Gregorian date Wednesday, 3 May 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 Wednesday without any doubt. The Arabic date 1421/01/28 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 3 May 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Muharram 1421 AH to its equivalent Gregorian date.
وَمَا كُنتُمْ تَسْتَتِرُونَ أَن يَشْهَدَ عَلَيْكُمْ سَمْعُكُمْ وَلَآ أَبْصَٰرُكُمْ وَلَا جُلُودُكُمْ وَلَٰكِن ظَنَنتُمْ أَنَّ ٱللَّهَ لَا يَعْلَمُ كَثِيرًۭا مِّمَّا تَعْمَلُونَ
Ye did not hide yourselves lest your ears and your eyes and your skins should testify against you, but ye deemed that Allah knew not much of what ye did.
Surah Fussilat(41:22)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: Followers of Ansar
Narrated Zaid bin Al-Arqam:
The Annwar said, "O Allah's Messenger (ﷺ)! Every prophet has his own followers and we have followed you. So will you invoke Allah to let our followers be considered from us (as Ansar too)?" So he invoked Allah accordingly.
Sahih al-Bukhari 3787