Well, the Hijri date 17 Rabi Al Thani 1421 corresponds to the Gregorian date Wednesday, 19 July 2000. This date lies in the fourth month of the Hijri year 1421 AH, which is Rabi Al-Thani of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1421/04/17 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 19 July 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Rabi Al Thani 1421 AH to its equivalent Gregorian date.
ذَٰلِكَ بِأَنَّهُمْ شَآقُّوا۟ ٱللَّهَ وَرَسُولَهُۥ ۖ وَمَن يُشَآقِّ ٱللَّهَ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ
That is because they were opposed to Allah and His messenger; and whoso is opposed to Allah, (for him) verily Allah is stern in reprisal.
Surah Al-Hashr(59:4)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: The dispatch of Usama bin Zaid to Al-Huraqat
Narrated Salama (in another narration):
I fought seven Ghazwat (i.e. battles) along with the Prophet (ﷺ) and also fought in nine battles, fought by armies sent by the Prophet (ﷺ) . Once Abu Bakr was our commander and another time, Usama was (our commander).
Sahih al-Bukhari 4271