Well, the Hijri date 29 Rajab 1421 corresponds to the Gregorian date Thursday, 26 October 2000. This date lies in the seventh month of the Hijri year 1421 AH, which is Rajab of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1421/07/29 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 26 October 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 29 Rajab 1421 AH to its equivalent Gregorian date.
فَعَتَوْا۟ عَنْ أَمْرِ رَبِّهِمْ فَأَخَذَتْهُمُ ٱلصَّٰعِقَةُ وَهُمْ يَنظُرُونَ
But they rebelled against their Lord's decree, and so the thunderbolt overtook them even while they gazed;
Surah Adh-Dhaariyat(51:44)
Sahih al-Bukhari
To make the Heart Tender (Ar-Riqaq)
Chapter: Regarding Al-Haud
Abu Hazim added:
An-Nu`man bin Abi `Aiyash, on hearing me, said. "Did you hear this from Sahl?" I said, "Yes." He said, " I bear witness that I heard Abu Sa`id Al-Khudri saying the same, adding that the Prophet (ﷺ) said: 'I will say: They are of me (i.e. my followers). It will be said, 'You do not know what they innovated (new things) in the religion after you left'. I will say, 'Far removed, far removed (from mercy), those who changed (their religion) after me."
Sahih al-Bukhari 6584