Well, the Hijri date 7 Rajab 1421 corresponds to the Gregorian date Wednesday, 4 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 Wednesday without any doubt. The Arabic date 1421/07/07 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 4 October 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 7 Rajab 1421 AH to its equivalent Gregorian date.
وَمَن كَفَرَ فَلَا يَحْزُنكَ كُفْرُهُۥٓ ۚ إِلَيْنَا مَرْجِعُهُمْ فَنُنَبِّئُهُم بِمَا عَمِلُوٓا۟ ۚ إِنَّ ٱللَّهَ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ
And whosoever disbelieveth, let not his disbelief afflict thee (O Muhammad). Unto Us is their return, and We shall tell them what they did. Lo! Allah is Aware of what is in the breasts (of men).
Surah Luqman(31:23)
Sahih al-Bukhari
Wedlock, Marriage (Nikaah)
Chapter: The meaning of the cancelling of the engagement.
Narrated `Abdullah bin `Umar:
"When Hafsa became a widow," `Umar said, "I met Abu Bakr and said to him, 'If you wish I will marry Hafsa bint `Umar to you.' I waited for a few days then Allah's Messenger (ﷺ) asked for her hand. Later Abu Bakr met me and said, 'Nothing stopped me from returning to you concerning your offer except that I knew that Allah's Messenger (ﷺ) had mentioned (his wish to marry) her, and I could never let out the secret of Allah's Messenger (ﷺ) . If he had left her, I would have accepted her.' "
Sahih al-Bukhari 5145