Well, the Hijri date 9 Dhul Qidah 1378 corresponds to the Gregorian date Saturday, 16 May 1959. This date lies in the eleventh month of the Hijri year 1378 AH, which is Dhu Al-Qidah of 1378 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1378/11/09 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 16 May 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 9 Dhul Qidah 1378 AH to its equivalent Gregorian date.
وَإِذَا بَدَّلْنَآ ءَايَةًۭ مَّكَانَ ءَايَةٍۢ ۙ وَٱللَّهُ أَعْلَمُ بِمَا يُنَزِّلُ قَالُوٓا۟ إِنَّمَآ أَنتَ مُفْتَرٍۭ ۚ بَلْ أَكْثَرُهُمْ لَا يَعْلَمُونَ
And when We put a revelation in place of (another) revelation, - and Allah knoweth best what He revealeth - they say: Lo! thou art but inventing. Most of them know not.
Surah An-Nahl(16:101)
Sahih al-Bukhari
Ablutions (Wudu')
Chapter: To perform ablution even on having no Hadath
Narrated `Amr bin `Amir:
Anas said, "The Prophet (ﷺ) used to perform ablution for every prayer." I asked Anas, "What did you used to do?' Anas replied, "We used to pray with the same ablution until we break it with Hadath."
Sahih al-Bukhari 214