Well, the Hijri date 11 Shaban 1399 corresponds to the Gregorian date Thursday, 5 July 1979. This date lies in the eighth month of the Hijri year 1399 AH, which is Shaban of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1399/08/11 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 5 July 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Shaban 1399 AH to its equivalent Gregorian date.
وَهُوَ ٱلَّذِى ذَرَأَكُمْ فِى ٱلْأَرْضِ وَإِلَيْهِ تُحْشَرُونَ
And He it is Who hath sown you broadcast in the earth, and unto Him ye will be gathered.
Surah Al-Muminoon(23:79)
Sahih al-Bukhari
Fasting
Chapter: Should it be said "Ramadan" or "the month of Ramadan"? And whoever thinks that both are permissible
Narrated Ibn `Umar:
I heard Allah's Messenger (ﷺ) saying, "When you see the crescent (of the month of Ramadan), start fasting, and when you see the crescent (of the month of Shawwal), stop fasting; and if the sky is overcast (and you can't see it) then regard the month of Ramadan as of 30 days."
Sahih al-Bukhari 1900