Well, the Hijri date 13 Shaban 1397 corresponds to the Gregorian date Friday, 29 July 1977. This date lies in the eighth month of the Hijri year 1397 AH, which is Shaban of 1397 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1397/08/13 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 29 July 1977 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shaban 1397 AH to its equivalent Gregorian date.
حَتَّىٰٓ إِذَا رَأَوْا۟ مَا يُوعَدُونَ فَسَيَعْلَمُونَ مَنْ أَضْعَفُ نَاصِرًۭا وَأَقَلُّ عَدَدًۭا
Till (the day) when they shall behold that which they are promised (they may doubt); but then they will know (for certain) who is weaker in allies and less in multitude.
Surah Al-Jinn(72:24)
Sahih al-Bukhari
Wills and Testaments (Wasaayaa)
Chapter: If somebody keeps an endowment, or stipulates that he should benefit by it as the other Muslims do
Abu 'Abdur-Rahman narrated:
When 'Uthman (ra) was circled (by the rebels), he looked upon them from above and said, "Ias you by Allah, I ask nobody but the Companions of the Prophet (ﷺ), dont you know that Allah's Messenger (ﷺ) said, 'Whoever will (buy and) dig the well of Ruma will be granted Paradise,' and I (bought and) dug it? Don't you know that he said. 'Whoever equip the army of 'Usra (i.e., Tabuk's Ghazwa) will be granted Paradise,' and I equipped it ?" They attested whatever he said. When 'Umar founded his endowment he said, "Its administrator can eat from it." The management of the endowment can be taken over by the founder himself or any other person, for both cases are permissible.
Sahih al-Bukhari 2778