Well, the Hijri date 13 Muharram 1387 corresponds to the Gregorian date Saturday, 22 April 1967. This date lies in the first month of the Hijri year 1387 AH, which is Muharram of 1387 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1387/01/13 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 22 April 1967 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Muharram 1387 AH to its equivalent Gregorian date.
وَيَقُولُونَ مَتَىٰ هَٰذَا ٱلْوَعْدُ إِن كُنتُمْ صَٰدِقِينَ
And they say: When will this promise be fulfilled, if ye are truthful?
Surah Yunus(10:48)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: The emigration of the Prophet (saws) to Al-Madina
Narrated Abu Wail:
We visited Khabbaba who said, "We migrated with the Prophet (ﷺ) for Allah's Sake, so our reward became due and sure with Allah. Some of us passed away without taking anything of their rewards (in this world) and one of them was Mus`ab bin `Umar who was martyred on the day (of the battle) of Uhud leaving a striped woolen cloak. When we covered his head with it, his feet became naked, and when covered his feet, his head became naked. So Allah's Messenger (ﷺ) ordered us to cover his head and put some Idhkhir (i.e. a special kind of grass) on his feet. (On the other hand) some of us have had their fruits ripened (in this world) and they are collecting them."
Sahih al-Bukhari 3897