Well, the Hijri date 15 Rabi Al Thani 1400 corresponds to the Gregorian date Sunday, 2 March 1980. This date lies in the fourth month of the Hijri year 1400 AH, which is Rabi Al-Thani of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1400/04/15 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 2 March 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Thani 1400 AH to its equivalent Gregorian date.
إِنَّ هَٰذَا ٱلْقُرْءَانَ يَقُصُّ عَلَىٰ بَنِىٓ إِسْرَٰٓءِيلَ أَكْثَرَ ٱلَّذِى هُمْ فِيهِ يَخْتَلِفُونَ
Lo! this Qur'an narrateth unto the Children of Israel most of that concerning which they differ.
Surah An-Naml(27:76)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
"...And stand before Allah with obedience [and do not speak to others during the Salat (prayers)]” (V.2:238)
Narrated Zaid bin Arqam:
We used to speak while in prayer. One of us used to speak to his brother (while in prayer) about his need, till the Verse was revealed:-- "Guard strictly the (five obligatory) prayers, especially the middle (the Best) (`Asr) Prayer and stand before Allah with obedience (and not to speak to others during the prayers)." Then we were ordered not to speak in the prayers.
Sahih al-Bukhari 4534