Well, the Hijri date 18 Shawwal 1378 corresponds to the Gregorian date Sunday, 26 April 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 Sunday without any doubt. The Arabic date 1378/10/18 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 26 April 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Shawwal 1378 AH to its equivalent Gregorian date.
أَوَلَمْ يَهْدِ لِلَّذِينَ يَرِثُونَ ٱلْأَرْضَ مِنۢ بَعْدِ أَهْلِهَآ أَن لَّوْ نَشَآءُ أَصَبْنَٰهُم بِذُنُوبِهِمْ ۚ وَنَطْبَعُ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَسْمَعُونَ
Is it not an indication to those who inherit the land after its people (who thus reaped the consequence of evil-doing) that, if We will, We can smite them for their sins and print upon their hearts so that they hear not?
Surah Al-A'raaf(7:100)
Sahih al-Bukhari
Oneness, Uniqueness of Allah (Tawheed)
Chapter: Asking Allah with His Names and seeking refuge with them
Narrated `Aisha:
The people said to the Prophet (ﷺ) , "O Allah's Messenger (ﷺ)! Here are people who have recently embraced Islam and they bring meat, and we do not know whether they had mentioned Allah's Name while slaughtering the animals or not." The Prophet (ﷺ) said, "You should mention Allah's Name and eat."
Sahih al-Bukhari 7398