Well, the Hijri date 20 Muharram 1400 corresponds to the Gregorian date Sunday, 9 December 1979. This date lies in the first month of the Hijri year 1400 AH, which is Muharram of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1400/01/20 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 9 December 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Muharram 1400 AH to its equivalent Gregorian date.
قَالُوا۟ حَرِّقُوهُ وَٱنصُرُوٓا۟ ءَالِهَتَكُمْ إِن كُنتُمْ فَٰعِلِينَ
They cried: Burn him and stand by your gods, if ye will be doing.
Surah Al-Anbiyaa(21:68)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: ‘'Umra Al-Qada’
Narrated Ibn Abi `Aufa:
When Allah's Messenger (ﷺ) performed the `Umra (which he performed in the year following the treaty of Al-Hudaibiya) we were screening Allah's Messenger (ﷺ) from the infidels and their boys lest they should harm him.
Sahih al-Bukhari 4255