Well, the Hijri date 5 Rajab 1381 corresponds to the Gregorian date Tuesday, 12 December 1961. This date lies in the seventh month of the Hijri year 1381 AH, which is Rajab of 1381 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1381/07/05 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 12 December 1961 to its equivalent Arabic date.
The following is the conversion of the Arabic date 5 Rajab 1381 AH to its equivalent Gregorian date.
فَأْتُوا۟ بِكِتَٰبِكُمْ إِن كُنتُمْ صَٰدِقِينَ
Then produce your writ, if ye are truthful.
Surah As-Saaffaat(37:157)
Sahih al-Bukhari
Prayers (Salat)
Chapter: The mosques which are on the way to Al-Madina and the places where the Prophet (pbuh) had offered Salat (Prayers)
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See translation for hadith 484 above
Sahih al-Bukhari 492