Well, the Hijri date 20 Rabi Al Awwal 1401 corresponds to the Gregorian date Monday, 26 January 1981. This date lies in the third month of the Hijri year 1401 AH, which is Rabi Al-Awwal of 1401 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1401/03/20 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 26 January 1981 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Awwal 1401 AH to its equivalent Gregorian date.
لِكُلِّ ٱمْرِئٍۢ مِّنْهُمْ يَوْمَئِذٍۢ شَأْنٌۭ يُغْنِيهِ
Every man that day will have concern enough to make him heedless (of others).
Surah Abasa(80:37)
Sahih al-Bukhari
Funerals (Al-Janaa'iz)
Chapter: It is disliked to offer the funeral prayer for the hypocrites, and to ask Allah's Forgiveness for the Mushrikun
Narrated `Umar bin Al-Khattab:
When `Abdullah bin Ubai bin Salul died, Allah's Messenger (ﷺ) (p.b.u.h) was called upon to offer his funeral prayer. When Allah's Messenger (ﷺ) stood up to offer the prayer, I got up quickly and said, "O Allah's Apostle! Are you going to pray for Ibn Ubai and he said so and so on such and such occasions?" And started mentioning all that he had said. Allah's Messenger (ﷺ) smiled and said, "O `Umar! Go away from me." When I talked too much he said, "I have been given the choice and so I have chosen (to offer the prayer). Had I known that he would be forgiven by asking for Allah's forgiveness for more than seventy times, surely I would have done so." (`Umar added): Allah's Messenger (ﷺ) offered his funeral prayer and returned and after a short while the two verses of Surat Bara' were revealed: i.e. "And never (O Muhammad) pray for any of them who dies . . . (to the end of the verse) rebellion (9.84)" -- (`Umar added), "Later I astonished at my daring before Allah's Messenger (ﷺ) on that day. And Allah and His Apostle know better."
Sahih al-Bukhari 1366