Well, the Hijri date 15 Muharram 1499 corresponds to the Gregorian date Monday, 23 December 2075. This date lies in the first month of the Hijri year 1499 AH, which is Muharram of 1499 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1499/01/15 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 23 December 2075 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Muharram 1499 AH to its equivalent Gregorian date.
وَإِذْ يَقُولُ ٱلْمُنَٰفِقُونَ وَٱلَّذِينَ فِى قُلُوبِهِم مَّرَضٌۭ مَّا وَعَدَنَا ٱللَّهُ وَرَسُولُهُۥٓ إِلَّا غُرُورًۭا
And when the hypocrites, and those in whose hearts is a disease, were saying: Allah and His messenger promised us naught but delusion.
Surah Al-Ahzaab(33:12)
Sahih al-Bukhari
Holding Fast to the Qur'an and Sunnah
Chapter: Comparing an ambiguous situation to a clear well-defined one
Narrated Ibn `Abbas:
A woman came to the Prophet (ﷺ) and said, "My mother vowed to perform the Hajj but she died before performing it. Should I perform the Hajj on her behalf?" He said, "Yes! Perform the Hajj on her behalf. See, if your mother had been in debt, would you have paid her debt?" She said, "Yes." He said, "So you should pay what is for Him as Allah has more right that one should fulfill one's obligations to Him. "
Sahih al-Bukhari 7315