Well, the Hijri date 15 Ramadan 1397 corresponds to the Gregorian date Monday, 29 August 1977. This date lies in the ninth month of the Hijri year 1397 AH, which is Ramadan of 1397 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1397/09/15 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 August 1977 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Ramadan 1397 AH to its equivalent Gregorian date.
إِنَّ فِى ٱخْتِلَٰفِ ٱلَّيْلِ وَٱلنَّهَارِ وَمَا خَلَقَ ٱللَّهُ فِى ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ لَءَايَٰتٍۢ لِّقَوْمٍۢ يَتَّقُونَ
Lo! in the difference of day and night and all that Allah hath created in the heavens and the earth are portents, verily, for folk who ward off (evil).
Surah Yunus(10:6)