Well, the Hijri date 20 Muharram 1399 corresponds to the Gregorian date Wednesday, 20 December 1978. This date lies in the first month of the Hijri year 1399 AH, which is Muharram of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1399/01/20 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 20 December 1978 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Muharram 1399 AH to its equivalent Gregorian date.
وَيَوْمَ نَحْشُرُ مِن كُلِّ أُمَّةٍۢ فَوْجًۭا مِّمَّن يُكَذِّبُ بِـَٔايَٰتِنَا فَهُمْ يُوزَعُونَ
And (remind them of) the Day when We shall gather out of every nation a host of those who denied Our revelations, and they will be set in array;
Surah An-Naml(27:83)
Sahih al-Bukhari
Accepting Information Given by a Truthful Person
Chapter: Wasat of the Prophet (saws) to the Arab delegates
Narrated Ibn `Abbas:
When the delegate of `Abd Al-Qais came to Allah's Messenger (ﷺ), he said, "Who are the delegate?" They said, "The delegate are from the tribe of Rabi`a." The Prophet (ﷺ) said, "Welcome, O the delegate, and welcome! O people! Neither you will have any disgrace nor will you regret." They said, "O Allah's Apostle! Between you and us there are the infidels of the tribe of Mudar, so please order us to do something good (religious deeds) that by acting on them we may enter Paradise, and that we may inform (our people) whom we have left behind, about it." They also asked (the Prophet) about drinks. He forbade them from four things and ordered them to do four things. He ordered them to believe in Allah, and asked them, "Do you know what is meant by belief in Allah?" They said, "Allah and His Apostle know best." He said, ''To testify that none has the right to be worshipped except Allah, the One, Who has no partners with Him, and that Muhammad is Allah's Messenger (ﷺ); and to offer prayers perfectly and to pay Zakat." (the narrator thinks that fasting in Ramadan is included), "and to give one-fifth of the war booty (to the state)." Then he forbade four (drinking utensils): Ad-Duba', Al56 Hantam, Al-Mazaffat and An-Naqir, or probably, Al-Muqaiyar. And then the Prophet (ﷺ) said, "Remember all these things by heart and preach it to those whom you have left behind."
Sahih al-Bukhari 7266
