Well, the Hijri date 12 Dhul Qidah 1378 corresponds to the Gregorian date Tuesday, 19 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 Tuesday without any doubt. The Arabic date 1378/11/12 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 19 May 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Dhul Qidah 1378 AH to its equivalent Gregorian date.
۞ وَهُوَ ٱلَّذِىٓ أَنشَأَ جَنَّٰتٍۢ مَّعْرُوشَٰتٍۢ وَغَيْرَ مَعْرُوشَٰتٍۢ وَٱلنَّخْلَ وَٱلزَّرْعَ مُخْتَلِفًا أُكُلُهُۥ وَٱلزَّيْتُونَ وَٱلرُّمَّانَ مُتَشَٰبِهًۭا وَغَيْرَ مُتَشَٰبِهٍۢ ۚ كُلُوا۟ مِن ثَمَرِهِۦٓ إِذَآ أَثْمَرَ وَءَاتُوا۟ حَقَّهُۥ يَوْمَ حَصَادِهِۦ ۖ وَلَا تُسْرِفُوٓا۟ ۚ إِنَّهُۥ لَا يُحِبُّ ٱلْمُسْرِفِينَ
He it is Who produceth gardens trellised and untrellised, and the date-palm, and crops of divers flavour, and the olive and the pomegranate, like and unlike. Eat ye of the fruit thereof when it fruiteth, and pay the due thereof upon the harvest day, and be not prodigal. Lo! Allah loveth not the prodigals.
Surah Al-An'aam(6:141)