Well, the Hijri date 21 Jumada Al Akhira 1427 corresponds to the Gregorian date Monday, 17 July 2006. This date lies in the sixth month of the Hijri year 1427 AH, which is Jumada Al-Thani of 1427 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1427/06/21 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 17 July 2006 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Jumada Al Akhira 1427 AH to its equivalent Gregorian date.
كَيْفَ يَهْدِى ٱللَّهُ قَوْمًۭا كَفَرُوا۟ بَعْدَ إِيمَٰنِهِمْ وَشَهِدُوٓا۟ أَنَّ ٱلرَّسُولَ حَقٌّۭ وَجَآءَهُمُ ٱلْبَيِّنَٰتُ ۚ وَٱللَّهُ لَا يَهْدِى ٱلْقَوْمَ ٱلظَّٰلِمِينَ
How shall Allah guide a people who disbelieved after their belief and (after) they bore witness that the messenger is true and after clear proofs (of Allah's Sovereignty) had come unto them. And Allah guideth not wrongdoing folk.
Surah Aal-i-Imraan(3:86)
Sahih al-Bukhari
Oaths and Vows
Chapter: To vow for to be obedient to Allah
Narrated `Aisha:
The Prophet (ﷺ) said, "Whoever vows that he will be obedient to Allah, should remain obedient to Him; and whoever made a vow that he will disobey Allah, should not disobey Him."
Sahih al-Bukhari 6696