Well, the Hijri date 9 Rajab 1378 corresponds to the Gregorian date Sunday, 18 January 1959. This date lies in the seventh month of the Hijri year 1378 AH, which is Rajab of 1378 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1378/07/09 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 18 January 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 9 Rajab 1378 AH to its equivalent Gregorian date.
لِّكُلِّ نَبَإٍۢ مُّسْتَقَرٌّۭ ۚ وَسَوْفَ تَعْلَمُونَ
For every announcement there is a term, and ye will come to know.
Surah Al-An'aam(6:67)
Sahih al-Bukhari
Accepting Information Given by a Truthful Person
Chapter: Acceptance of the information given by one truthful person in about all matters
Narrated Anas bin Malik:
I used to offer drinks prepared from infused dates to Abu Talha Al-Ansari, Abu 'Ubada bin Al Jarrah and Ubai bin Ka`b. Then a person came to them and said, "All alcoholic drinks have been prohibited." Abii Talha then said, "O Anas! Get up and break all these jars." So I got up and took a mortar belonging to us, and hit the jars with its lower part till they broke.
Sahih al-Bukhari 7253