Well, the Hijri date 4 Dhul Hijjah 1366 corresponds to the Gregorian date Saturday, 18 October 1947. This date lies in the twelfth month of the Hijri year 1366 AH, which is Dhu Al-Hijjah of 1366 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1366/12/04 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 October 1947 to its equivalent Arabic date.
The following is the conversion of the Arabic date 4 Dhul Hijjah 1366 AH to its equivalent Gregorian date.
فَٱنظُرْ كَيْفَ كَانَ عَٰقِبَةُ مَكْرِهِمْ أَنَّا دَمَّرْنَٰهُمْ وَقَوْمَهُمْ أَجْمَعِينَ
Then see the nature of the consequence of their plotting, for lo! We destroyed them and their people, every one.
Surah An-Naml(27:51)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: The days of Pre-Islamic Period of Ignorance
Narrated Ibn `Abbas:
The people used to consider the performance of `Umra in the months of Hajj an evil deed on the earth, and they used to call the month of Muharram as Safar and used to say, "When (the wounds over) the backs (of the camels) have healed and the foot-marks (of the camels) have vanished (after coming from Hajj), then `Umra becomes legal for the one who wants to perform `Umra." Allah's Messenger (ﷺ) and his companions reached Mecca assuming Ihram for Hajj on the fourth of Dhul-Hijja. The Prophet (ﷺ) ordered his companions to perform `Umra (with that lhram instead of Hajj). They asked, "O Allah's Apostle! What kind of finishing of Ihram?" The Prophet (ﷺ) said, "Finish the Ihram completely.'
Sahih al-Bukhari 3832