Well, the Hijri date 27 Rabi Al Awwal 1436 corresponds to the Gregorian date Sunday, 18 January 2015. This date lies in the third month of the Hijri year 1436 AH, which is Rabi Al-Awwal of 1436 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1436/03/27 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 18 January 2015 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Rabi Al Awwal 1436 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِينَ كَفَرُوا۟ بَعْدَ إِيمَٰنِهِمْ ثُمَّ ٱزْدَادُوا۟ كُفْرًۭا لَّن تُقْبَلَ تَوْبَتُهُمْ وَأُو۟لَٰٓئِكَ هُمُ ٱلضَّآلُّونَ
Lo! those who disbelieve after their (profession of) belief, and afterward grow violent in disbelief: their repentance will not be accepted. And such are those who are astray.
Surah Aal-i-Imraan(3:90)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: The Ghazwa of Al-Hudaibiya
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`Abdullah bin Abi `Aufa said, "The people (who gave the Pledge of allegiance) under the Tree numbered 1300 and the number of Bani Aslam was 1/8 of the Emigrants."
Sahih al-Bukhari 4155