Well, the Hijri date 12 Shawwal 1423 corresponds to the Gregorian date Monday, 16 December 2002. This date lies in the tenth month of the Hijri year 1423 AH, which is Shawwal of 1423 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1423/10/12 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 16 December 2002 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Shawwal 1423 AH to its equivalent Gregorian date.
وَمَنْ أَظْلَمُ مِمَّن ذُكِّرَ بِـَٔايَٰتِ رَبِّهِۦ فَأَعْرَضَ عَنْهَا وَنَسِىَ مَا قَدَّمَتْ يَدَاهُ ۚ إِنَّا جَعَلْنَا عَلَىٰ قُلُوبِهِمْ أَكِنَّةً أَن يَفْقَهُوهُ وَفِىٓ ءَاذَانِهِمْ وَقْرًۭا ۖ وَإِن تَدْعُهُمْ إِلَى ٱلْهُدَىٰ فَلَن يَهْتَدُوٓا۟ إِذًا أَبَدًۭا
And who doth greater wrong than he who hath been reminded of the revelations of his Lord, yet turneth away from them and forgetteth what his hands send forward (to the Judgment)? Lo! on their hearts We have placed coverings so that they understand not, and in their ears a deafness. And though thou call them to the guidance, in that case they can never be led aright.
Surah Al-Kahf(18:57)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: To proceed in Allah's Cause
Narrated Sahl bin Sa`d:
The Prophet (ﷺ) said, "A single endeavor in Allah's Cause in the afternoon and in the forenoon is better than the world and whatever is in it."
Sahih al-Bukhari 2794