Well, the Hijri date 11 Shaban 1378 corresponds to the Gregorian date Wednesday, 18 February 1959. This date lies in the eighth month of the Hijri year 1378 AH, which is Shaban of 1378 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1378/08/11 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 18 February 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Shaban 1378 AH to its equivalent Gregorian date.
أَلَمْ تَعْلَمْ أَنَّ ٱللَّهَ يَعْلَمُ مَا فِى ٱلسَّمَآءِ وَٱلْأَرْضِ ۗ إِنَّ ذَٰلِكَ فِى كِتَٰبٍ ۚ إِنَّ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٌۭ
Hast thou not known that Allah knoweth all that is in the heaven and the earth? Lo! it is in a record. Lo! that is easy for Allah.
Surah Al-Hajj(22:70)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah "...Then do not set up rivals unto Allah (in worship) while you know (that He Alone has the right to be worshipped)..." (V.2:22)
Narrated `Abdullah:
I asked the Prophet, "What is the greatest sin in the Sight of Allah?" He said, "That you set up a rival unto Allah though He Alone created you." I said, "That is indeed a great sin." Then asked, "What is next?" He said, "To kill your son lest he should share your food with you." I asked, "What is next?" He said, "To commit illegal sexual intercourse with the wife of your neighbor."
Sahih al-Bukhari 4477