Well, the Hijri date 3 Jumada Al Oula 1366 corresponds to the Gregorian date Tuesday, 25 March 1947. This date lies in the fifth month of the Hijri year 1366 AH, which is Jumada Al-Awwal of 1366 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1366/05/03 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 25 March 1947 to its equivalent Arabic date.
The following is the conversion of the Arabic date 3 Jumada Al Oula 1366 AH to its equivalent Gregorian date.
وَإِذَآ أُنزِلَتْ سُورَةٌ أَنْ ءَامِنُوا۟ بِٱللَّهِ وَجَٰهِدُوا۟ مَعَ رَسُولِهِ ٱسْتَـْٔذَنَكَ أُو۟لُوا۟ ٱلطَّوْلِ مِنْهُمْ وَقَالُوا۟ ذَرْنَا نَكُن مَّعَ ٱلْقَٰعِدِينَ
And when a surah is revealed (which saith): Believe in Allah and strive along with His messenger, the men of wealth among them still ask leave of thee and say: Suffer us to be with those who sit (at home).
Surah At-Tawba(9:86)
Sahih al-Bukhari
Virtues of Madinah
Chapter: Sin of that person who harms the people of Al-Madina
Narrated Sa`d:
I heard the Prophet (ﷺ) saying, "None plots against the people of Medina but that he will be dissolved (destroyed) like the salt is dissolved in water."
Sahih al-Bukhari 1877