Well, the Hijri date 11 Shaban 1400 corresponds to the Gregorian date Monday, 23 June 1980. This date lies in the eighth month of the Hijri year 1400 AH, which is Shaban of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1400/08/11 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 23 June 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Shaban 1400 AH to its equivalent Gregorian date.
أَلَا لِلَّهِ ٱلدِّينُ ٱلْخَالِصُ ۚ وَٱلَّذِينَ ٱتَّخَذُوا۟ مِن دُونِهِۦٓ أَوْلِيَآءَ مَا نَعْبُدُهُمْ إِلَّا لِيُقَرِّبُونَآ إِلَى ٱللَّهِ زُلْفَىٰٓ إِنَّ ٱللَّهَ يَحْكُمُ بَيْنَهُمْ فِى مَا هُمْ فِيهِ يَخْتَلِفُونَ ۗ إِنَّ ٱللَّهَ لَا يَهْدِى مَنْ هُوَ كَٰذِبٌۭ كَفَّارٌۭ
Surely pure religion is for Allah only. And those who choose protecting friends beside Him (say): We worship them only that they may bring us near unto Allah. Lo! Allah will judge between them concerning that wherein they differ. Lo! Allah guideth not him who is a liar, an ingrate.
Surah Az-Zumar(39:3)
Sahih al-Bukhari
Prayer at Night (Tahajjud)
Chapter: Satan'a tying of knots at the back of the head if one does not offer the ight prayer
Narrated Samura bin Jundab:
The Prophet (ﷺ) said in his narration of a dream that he saw, "He whose head was being crushed with a stone was one who learnt the Qur'an but never acted on it, and slept ignoring the compulsory prayers."
Sahih al-Bukhari 1143