Well, the Hijri date 21 Shaban 1436 corresponds to the Gregorian date Monday, 8 June 2015. This date lies in the eighth month of the Hijri year 1436 AH, which is Shaban of 1436 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1436/08/21 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 8 June 2015 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shaban 1436 AH to its equivalent Gregorian date.
يَعْتَذِرُونَ إِلَيْكُمْ إِذَا رَجَعْتُمْ إِلَيْهِمْ ۚ قُل لَّا تَعْتَذِرُوا۟ لَن نُّؤْمِنَ لَكُمْ قَدْ نَبَّأَنَا ٱللَّهُ مِنْ أَخْبَارِكُمْ ۚ وَسَيَرَى ٱللَّهُ عَمَلَكُمْ وَرَسُولُهُۥ ثُمَّ تُرَدُّونَ إِلَىٰ عَٰلِمِ ٱلْغَيْبِ وَٱلشَّهَٰدَةِ فَيُنَبِّئُكُم بِمَا كُنتُمْ تَعْمَلُونَ
They will make excuse to you (Muslims) when ye return unto them. Say: Make no excuse, for we shall not believe you. Allah hath told us tidings of you. Allah and His messenger will see your conduct, and then ye will be brought back unto Him Who knoweth the Invisible as well as the Visible, and He will tell you what ye used to do.
Surah At-Tawba(9:94)
Sahih al-Bukhari
Virtues and Merits of the Prophet (pbuh) and his Companions
Chapter: The story of the Ethiopians
Narrated `Aisha:
That during the Mina days, Abu Bakr came to her, while there where two girls with her, beating drums, and the Prophet (ﷺ) was (lying) covering himself with his garment. Abu Bakr rebuked the two girls, but the Prophet (ﷺ) uncovered his face and said, "O Abu Bakr! Leave them, for these are the days of Id (festival)." Those days were the days of Mina-. `Aisha added, "I was being screened by the Prophet (ﷺ) while I was watching the Ethiopians playing in the Mosque. `Umar rebuked them, but the Prophet (ﷺ) said, "Leave them, O Bani Arfida! Play. (for) you are safe."
Sahih al-Bukhari 3529, 3530