Well, the Hijri date 29 Rabi Al Thani 1399 corresponds to the Gregorian date Tuesday, 27 March 1979. This date lies in the fourth month of the Hijri year 1399 AH, which is Rabi Al-Thani of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1399/04/29 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 27 March 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 29 Rabi Al Thani 1399 AH to its equivalent Gregorian date.
ٱللَّهُ ٱلَّذِى خَلَقَ سَبْعَ سَمَٰوَٰتٍۢ وَمِنَ ٱلْأَرْضِ مِثْلَهُنَّ يَتَنَزَّلُ ٱلْأَمْرُ بَيْنَهُنَّ لِتَعْلَمُوٓا۟ أَنَّ ٱللَّهَ عَلَىٰ كُلِّ شَىْءٍۢ قَدِيرٌۭ وَأَنَّ ٱللَّهَ قَدْ أَحَاطَ بِكُلِّ شَىْءٍ عِلْمًۢا
Allah it is who hath created seven heavens, and of the earth the like thereof. The commandment cometh down among them slowly, that ye may know that Allah is Able to do all things, and that Allah surroundeth all things in knowledge.
Surah At-Talaaq(65:12)