Well, the Hijri date 12 Jumada Al Oula 1440 corresponds to the Gregorian date Friday, 18 January 2019. This date lies in the fifth month of the Hijri year 1440 AH, which is Jumada Al-Awwal of 1440 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1440/05/12 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 18 January 2019 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Jumada Al Oula 1440 AH to its equivalent Gregorian date.
وَإِذَا قِيلَ لَهُمْ تَعَالَوْا۟ إِلَىٰ مَآ أَنزَلَ ٱللَّهُ وَإِلَى ٱلرَّسُولِ قَالُوا۟ حَسْبُنَا مَا وَجَدْنَا عَلَيْهِ ءَابَآءَنَآ ۚ أَوَلَوْ كَانَ ءَابَآؤُهُمْ لَا يَعْلَمُونَ شَيْـًۭٔا وَلَا يَهْتَدُونَ
And when it is said unto them: Come unto that which Allah hath revealed and unto the messenger, they say: Enough for us is that wherein we found our fathers. What! Even though their fathers had no knowledge whatsoever, and no guidance?
Surah Al-Maaida(5:104)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: To give a Bai'a for not to flee during a battle
Narrated `Abdullah bin Zaid:
that in the time (of the battle) of Al-Harra a person came to him and said, "Ibn Hanzala is taking the pledge of allegiance from the people for death." He said, "I will never give a pledge of allegiance for such a thing to anyone after Allah's Messenger (ﷺ)."
Sahih al-Bukhari 2959