Well, the Hijri date 11 Jumada Al Oula 1423 corresponds to the Gregorian date Sunday, 21 July 2002. This date lies in the fifth month of the Hijri year 1423 AH, which is Jumada Al-Awwal of 1423 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1423/05/11 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 21 July 2002 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Jumada Al Oula 1423 AH to its equivalent Gregorian date.
وَظَلَّلْنَا عَلَيْكُمُ ٱلْغَمَامَ وَأَنزَلْنَا عَلَيْكُمُ ٱلْمَنَّ وَٱلسَّلْوَىٰ ۖ كُلُوا۟ مِن طَيِّبَٰتِ مَا رَزَقْنَٰكُمْ ۖ وَمَا ظَلَمُونَا وَلَٰكِن كَانُوٓا۟ أَنفُسَهُمْ يَظْلِمُونَ
And We caused the white cloud to overshadow you and sent down on you the manna and the quails, (saying): Eat of the good things wherewith We have provided you - they wronged Us not, but they did wrong themselves.
Surah Al-Baqara(2:57)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: Pronouncing the wording of Adhan for Salat (prayers) twice (in doubles)
Narrated Anas bin Malik:
When the number of Muslims increased they discussed the question as to how to know the time for the prayer by some familiar means. Some suggested that a fire be lit (at the time of the prayer) and others put forward the proposal to ring the bell. Bilal was ordered to pronounce the wording of Adhan twice and of the Iqama once only.
Sahih al-Bukhari 606