Well, the Hijri date 26 Shaban 1404 corresponds to the Gregorian date Sunday, 27 May 1984. This date lies in the eighth month of the Hijri year 1404 AH, which is Shaban of 1404 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1404/08/26 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 27 May 1984 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Shaban 1404 AH to its equivalent Gregorian date.
Surah (:)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter
Narrated Majashi:
I took my brother to the Prophet (ﷺ) after the Conquest (of Mecca) and said, "O Allah's Messenger (ﷺ)! I have come to you with my brother so that you may take a pledge of allegiance from him for migration." The Prophet (ﷺ) said, The people of migration (i.e. those who migrated to Medina before the Conquest) enjoyed the privileges of migration (i.e. there is no need for migration anymore)." I said to the Prophet, "For what will you take his pledge of allegiance?" The Prophet (ﷺ) said, "I will take his pledge of allegiance for Islam, Belief, and for Jihad (i.e. fighting in Allah's Cause).
Sahih al-Bukhari 4305, 4306