Well, the Hijri date 18 Dhul Qidah 1421 corresponds to the Gregorian date Monday, 12 February 2001. This date lies in the eleventh month of the Hijri year 1421 AH, which is Dhu Al-Qidah of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1421/11/18 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 12 February 2001 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Dhul Qidah 1421 AH to its equivalent Gregorian date.
قُلْ أَرَءَيْتُمْ إِن جَعَلَ ٱللَّهُ عَلَيْكُمُ ٱلنَّهَارَ سَرْمَدًا إِلَىٰ يَوْمِ ٱلْقِيَٰمَةِ مَنْ إِلَٰهٌ غَيْرُ ٱللَّهِ يَأْتِيكُم بِلَيْلٍۢ تَسْكُنُونَ فِيهِ ۖ أَفَلَا تُبْصِرُونَ
Say: Have ye thought, if Allah made day everlasting for you till the Day of Resurrection, who is a god beside Allah who could bring you night wherein ye rest? Will ye not then see?
Surah Al-Qasas(28:72)