Well, the Hijri date 21 Muharram 1408 corresponds to the Gregorian date Monday, 14 September 1987. This date lies in the first month of the Hijri year 1408 AH, which is Muharram of 1408 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1408/01/21 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 14 September 1987 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Muharram 1408 AH to its equivalent Gregorian date.
مِن شَرِّ ٱلْوَسْوَاسِ ٱلْخَنَّاسِ
From the evil of the sneaking whisperer,
Surah An-Naas(114:4)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: The Ghazwa of Uhud
Narrated Zaid bin Thabit:
When the Prophet (ﷺ) set out for (the battle of) Uhud, some of those who had gone out with him, returned. The companions of the Prophet (ﷺ) were divided into two groups. One group said, "We will fight them (i.e. the enemy)," and the other group said, "We will not fight them." So there came the Divine Revelation:-- '(O Muslims!) Then what is the matter within you that you are divided. Into two parties about the hypocrites? Allah has cast them back (to disbelief) Because of what they have earned.' (4.88) On that, the Prophet (ﷺ) said, "That is Taiba (i.e. the city of Medina) which clears one from one's sins as the fire expels the impurities of silver."
Sahih al-Bukhari 4050