Well, the Hijri date 15 Rabi Al Thani 1403 corresponds to the Gregorian date Saturday, 29 January 1983. This date lies in the fourth month of the Hijri year 1403 AH, which is Rabi Al-Thani of 1403 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1403/04/15 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 29 January 1983 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Thani 1403 AH to its equivalent Gregorian date.
قَالُوا۟ لَمْ نَكُ مِنَ ٱلْمُصَلِّينَ
They will answer: We were not of those who prayed
Surah Al-Muddaththir(74:43)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter
Narrated Az-Zuhri:
I heard `Urwa bin Az-Zubair talking to `Umar bin `Abdul `Aziz during the latter's Governorship (at Medina), he said, "Al-Mughira bin Shu`ba delayed the `Asr prayer when he was the ruler of Al-Kufa. On that, Abu Mas`ud. `Uqba bin `Amr Al-Ansari, the grand-father of Zaid bin Hasan, who was one of the Badr warriors, came in and said, (to Al-Mughira), 'You know that Gabriel came down and offered the prayer and Allah's Messenger (ﷺ) prayed five prescribed prayers, and Gabriel said (to the Prophet (ﷺ) ), "I have been ordered to do so (i.e. offer these five prayers at these fixed stated hours of the day).
Sahih al-Bukhari 4007