Well, the Hijri date 26 Shawwal 1378 corresponds to the Gregorian date Monday, 4 May 1959. This date lies in the tenth month of the Hijri year 1378 AH, which is Shawwal of 1378 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1378/10/26 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 4 May 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Shawwal 1378 AH to its equivalent Gregorian date.
مَا كَانَ لِبَشَرٍ أَن يُؤْتِيَهُ ٱللَّهُ ٱلْكِتَٰبَ وَٱلْحُكْمَ وَٱلنُّبُوَّةَ ثُمَّ يَقُولَ لِلنَّاسِ كُونُوا۟ عِبَادًۭا لِّى مِن دُونِ ٱللَّهِ وَلَٰكِن كُونُوا۟ رَبَّٰنِيِّۦنَ بِمَا كُنتُمْ تُعَلِّمُونَ ٱلْكِتَٰبَ وَبِمَا كُنتُمْ تَدْرُسُونَ
It is not (possible) for any human being unto whom Allah had given the Scripture and wisdom and the prophethood that he should afterwards have said unto mankind: Be slaves of me instead of Allah; but (what he said was): Be ye faithful servants of the Lord by virtue of your constant teaching of the Scripture and of your constant study thereof.
Surah Aal-i-Imraan(3:79)
Sahih al-Bukhari
Knowledge
Chapter: A man teaching (religion to) his woman-slave and his family
Narrated Abu Burda's father:
Allah's Messenger (ﷺ) said "Three persons will have a double reward: 1. A Person from the people of the scriptures who believed in his prophet (Jesus or Moses) and then believed in the Prophet (ﷺ) Muhammad (i .e. has embraced Islam). 2. A slave who discharges his duties to Allah and his master. 3. A master of a woman-slave who teaches her good manners and educates her in the best possible way (the religion) and manumits her and then marries her."
Sahih al-Bukhari 97
