Well, the Hijri date 9 Rajab 1411 corresponds to the Gregorian date Thursday, 24 January 1991. This date lies in the seventh month of the Hijri year 1411 AH, which is Rajab of 1411 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1411/07/09 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 24 January 1991 to its equivalent Arabic date.
The following is the conversion of the Arabic date 9 Rajab 1411 AH to its equivalent Gregorian date.
ٱعْلَمُوٓا۟ أَنَّمَا ٱلْحَيَوٰةُ ٱلدُّنْيَا لَعِبٌۭ وَلَهْوٌۭ وَزِينَةٌۭ وَتَفَاخُرٌۢ بَيْنَكُمْ وَتَكَاثُرٌۭ فِى ٱلْأَمْوَٰلِ وَٱلْأَوْلَٰدِ ۖ كَمَثَلِ غَيْثٍ أَعْجَبَ ٱلْكُفَّارَ نَبَاتُهُۥ ثُمَّ يَهِيجُ فَتَرَىٰهُ مُصْفَرًّۭا ثُمَّ يَكُونُ حُطَٰمًۭا ۖ وَفِى ٱلْءَاخِرَةِ عَذَابٌۭ شَدِيدٌۭ وَمَغْفِرَةٌۭ مِّنَ ٱللَّهِ وَرِضْوَٰنٌۭ ۚ وَمَا ٱلْحَيَوٰةُ ٱلدُّنْيَآ إِلَّا مَتَٰعُ ٱلْغُرُورِ
Know that the life of the world is only play, and idle talk, and pageantry, and boasting among you, and rivalry in respect of wealth and children; as the likeness of vegetation after rain, whereof the growth is pleasing to the husbandman, but afterward it drieth up and thou seest it turning yellow, then it becometh straw. And in the Hereafter there is grievous punishment, and (also) forgiveness from Allah and His good pleasure, whereas the life of the world is but matter of illusion.
Surah Al-Hadid(57:20)