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.
Surah (:)
Sahih al-Bukhari
Medicine
Chapter: To sniff the Indian and sea Qust (kind of incense)
Narrated Um Qais bint Mihsan:
I heard the Prophet (ﷺ) saying, "Treat with the Indian incense, for it has healing for seven diseases; it is to be sniffed by one having throat trouble, and to be put into one side of the mouth of one suffering from pleurisy." Once I went to Allah's Messenger (ﷺ) with a son of mine who would not eat any food, and the boy passed urine on him whereupon he asked for some water and sprinkled it over the place of urine.
Sahih al-Bukhari 5692, 5693