Well, the Hijri date 18 Shaban 1437 corresponds to the Gregorian date Wednesday, 25 May 2016. This date lies in the eighth month of the Hijri year 1437 AH, which is Shaban of 1437 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1437/08/18 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 25 May 2016 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Shaban 1437 AH to its equivalent Gregorian date.
فَقَالَ ٱلْمَلَؤُا۟ ٱلَّذِينَ كَفَرُوا۟ مِن قَوْمِهِۦ مَا هَٰذَآ إِلَّا بَشَرٌۭ مِّثْلُكُمْ يُرِيدُ أَن يَتَفَضَّلَ عَلَيْكُمْ وَلَوْ شَآءَ ٱللَّهُ لَأَنزَلَ مَلَٰٓئِكَةًۭ مَّا سَمِعْنَا بِهَٰذَا فِىٓ ءَابَآئِنَا ٱلْأَوَّلِينَ
But the chieftains of his folk, who disbelieved, said: This is only a mortal like you who would make himself superior to you. Had Allah willed, He surely could have sent down angels. We heard not of this in the case of our fathers of old.
Surah Al-Muminoon(23:24)
Sahih al-Bukhari
Holding Fast to the Qur'an and Sunnah
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Narrated Tariq bin Shihab:
A Jew said to `Umar, "O Chief of the Believers, if this verse: 'This day I have perfected your religion for you, completed My favors upon you, and have chosen for you, Islam as your religion.' (5.3) had been revealed upon us, we would have taken that day as an `Id (festival) day." `Umar said, "I know definitely on what day this Verse was revealed; it was revealed on the day of `Arafat, on a Friday."
Sahih al-Bukhari 7268