Well, the Hijri date 17 Rajab 1401 corresponds to the Gregorian date Thursday, 21 May 1981. This date lies in the seventh month of the Hijri year 1401 AH, which is Rajab of 1401 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1401/07/17 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 21 May 1981 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Rajab 1401 AH to its equivalent Gregorian date.
فَلَمَّآ أَسْلَمَا وَتَلَّهُۥ لِلْجَبِينِ
Then, when they had both surrendered (to Allah), and he had flung him down upon his face,
Surah As-Saaffaat(37:103)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: And what is said regarding the limit of the completion of bowing and of keeping the back straight and the calmness with which it is performed.
Narrated Al-Bara:
The bowing, the prostration the sitting in between the two prostrations and the standing after the bowing of the Prophet (ﷺ) but not qiyam (standing in the prayer) and qu`ud (sitting in the prayer) used to be approximately equal (in duration).
Sahih al-Bukhari 792