Well, the Hijri date 21 Rajab 1437 corresponds to the Gregorian date Thursday, 28 April 2016. This date lies in the seventh month of the Hijri year 1437 AH, which is Rajab of 1437 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1437/07/21 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 28 April 2016 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rajab 1437 AH to its equivalent Gregorian date.
وَقَالَ فِرْعَوْنُ ٱئْتُونِى بِكُلِّ سَٰحِرٍ عَلِيمٍۢ
And Pharaoh said: Bring every cunning wizard unto me.
Surah Yunus(10:79)
Sahih al-Bukhari
Holding Fast to the Qur'an and Sunnah
Chapter: The religious learned men should not differ
Narrated Anas:
The Prophet (ﷺ) brought the Ansar and the Quarish people into alliance in my house at Medina, and he invoked Allah for one month against the tribe of Bani Sulaim in (the last rak`a of each compulsory) prayer.
Sahih al-Bukhari 7340, 7341
