Well, the Hijri date 19 Dhul Qidah 1400 corresponds to the Gregorian date Sunday, 28 September 1980. This date lies in the eleventh month of the Hijri year 1400 AH, which is Dhu Al-Qidah of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1400/11/19 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 September 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 19 Dhul Qidah 1400 AH to its equivalent Gregorian date.
قُلْ أَنفِقُوا۟ طَوْعًا أَوْ كَرْهًۭا لَّن يُتَقَبَّلَ مِنكُمْ ۖ إِنَّكُمْ كُنتُمْ قَوْمًۭا فَٰسِقِينَ
Say: Pay (your contribution), willingly or unwillingly, it will not be accepted from you. Lo! ye were ever froward folk.
Surah At-Tawba(9:53)
Sahih al-Bukhari
Sales and Trade
Chapter: Selling of Dinar for Dinar on credit
Narrated Abu Salih Az-Zaiyat:
I heard Abu Sa`id Al-Khudri saying, "The selling of a Dinar for a Dinar, and a Dirham for a Dirham (is permissible)." I said to him, "Ibn `Abbas does not say the same." Abu Sa`id replied, "I asked Ibn `Abbas whether he had heard it from the Prophet (ﷺ) s or seen it in the Holy Book. Ibn `Abbas replied, "I do not claim that, and you know Allah's Messenger (ﷺ) better than I, but Usama informed me that the Prophet had said, 'There is no Riba (in money exchange) except when it is not done from hand to hand (i.e. when there is delay in payment).' "
Sahih al-Bukhari 2178, 2179