Well, the Hijri date 21 Rabi Al Thani 1380 corresponds to the Gregorian date Tuesday, 11 October 1960. This date lies in the fourth month of the Hijri year 1380 AH, which is Rabi Al-Thani of 1380 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1380/04/21 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 11 October 1960 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1380 AH to its equivalent Gregorian date.
قَالَ رَبِّ إِنَّ قَوْمِى كَذَّبُونِ
He said: My Lord! Lo! my own folk deny me.
Surah Ash-Shu'araa(26:117)
Sahih al-Bukhari
Prayers (Salat)
Chapter: Raising the voice in the mosque
Narrated Ka`b bin Malik:
During the lifetime of Allah's Messenger (ﷺ) I asked Ibn Abi Hadrad in the mosque to pay the debts which he owed to me and our voices grew so loud that Allah's Messenger (ﷺ) heard them while he was in his house. So he came to us after raising the curtain of his room. The Prophet (ﷺ) said, "O Ka`b bin Malik!" I replied, "Labaik, O Allah's Messenger (ﷺ)." He gestured with his hand to me to reduce the debt to one half. I said, "O Allah's Messenger (ﷺ) have done it." Allah's Messenger (ﷺ) said (to Ibn Hadrad), "Get up and pay it."
Sahih al-Bukhari 471