Well, the Hijri date 13 Shaban 1359 corresponds to the Gregorian date Sunday, 15 September 1940. This date lies in the eighth month of the Hijri year 1359 AH, which is Shaban of 1359 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1359/08/13 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 15 September 1940 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shaban 1359 AH to its equivalent Gregorian date.
لِيُوَفِّيَهُمْ أُجُورَهُمْ وَيَزِيدَهُم مِّن فَضْلِهِۦٓ ۚ إِنَّهُۥ غَفُورٌۭ شَكُورٌۭ
That He will pay them their wages and increase them of His grace. Lo! He is Forgiving, Responsive.
Surah Faatir(35:30)
Sahih al-Bukhari
Virtues of Prayer at Masjid Makkah and Madinah
Chapter: The Masjid Quba (the Mosque of Quba)
Narrated Nafi`:
Ibn `Umar never offered the Duha prayer except on two occasions: (1) Whenever he reached Mecca; and he always used to reach Mecca in the forenoon. He would perform Tawaf round the Ka`ba and then offer two rak`at at the rear of Maqam Ibrahim. (2) Whenever he visited Quba, for he used to visit it every Saturday. When he entered the Mosque, he disliked to leave it without offering a prayer. Ibn `Umar narrated that Allah's Messenger (ﷺ) used to visit the Mosque of Quba (sometime) walking and (sometime) riding. And he (i.e. Ibn `Umar) used to say, "I do only what my companions used to do and I don't forbid anybody to pray at any time during the day or night except that one should not intend to pray at sunrise or sunset."
Sahih al-Bukhari 1191, 1192