Well, the Hijri date 21 Safar 1400 corresponds to the Gregorian date Wednesday, 9 January 1980. This date lies in the second month of the Hijri year 1400 AH, which is Safar of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1400/02/21 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 9 January 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Safar 1400 AH to its equivalent Gregorian date.
فَٱسْتَفْتِهِمْ أَلِرَبِّكَ ٱلْبَنَاتُ وَلَهُمُ ٱلْبَنُونَ
Now ask them (O Muhammad): Hath thy Lord daughters whereas they have sons?
Surah As-Saaffaat(37:149)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: How many Ghazawat the Prophet (saws) fought
Narrated Al-Bara:
I fought fifteen Ghazawat in the company of the Prophet.
Sahih al-Bukhari 4472