Well, the Hijri date 21 Rajab 1381 corresponds to the Gregorian date Thursday, 28 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 Thursday without any doubt. The Arabic date 1381/07/21 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 28 December 1961 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rajab 1381 AH to its equivalent Gregorian date.
قُل لَّكُم مِّيعَادُ يَوْمٍۢ لَّا تَسْتَـْٔخِرُونَ عَنْهُ سَاعَةًۭ وَلَا تَسْتَقْدِمُونَ
Say (O Muhammad): Yours is the promise of a Day which ye cannot postpone nor hasten by an hour.
Surah Saba(34:30)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: If one offers Salat (prayer) and the leads the people in Salat.
Narrated Jabir bin `Abdullah:
Mu`adh used to pray with the Prophet (ﷺ) and then go and lead his people (tribe) in the prayer.
Sahih al-Bukhari 711