Well, the Hijri date 21 Rajab 1427 corresponds to the Gregorian date Tuesday, 15 August 2006. This date lies in the seventh month of the Hijri year 1427 AH, which is Rajab of 1427 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1427/07/21 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 15 August 2006 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rajab 1427 AH to its equivalent Gregorian date.
۞ وَقِيلَ لِلَّذِينَ ٱتَّقَوْا۟ مَاذَآ أَنزَلَ رَبُّكُمْ ۚ قَالُوا۟ خَيْرًۭا ۗ لِّلَّذِينَ أَحْسَنُوا۟ فِى هَٰذِهِ ٱلدُّنْيَا حَسَنَةٌۭ ۚ وَلَدَارُ ٱلْءَاخِرَةِ خَيْرٌۭ ۚ وَلَنِعْمَ دَارُ ٱلْمُتَّقِينَ
And it is said unto those who ward off (evil): What hath your Lord revealed? They say: Good. For those who do good in this world there is a good (reward) and the home of the Hereafter will be better. Pleasant indeed will be the home of those who ward off (evil) -
Surah An-Nahl(16:30)
Sahih al-Bukhari
Medicine
Chapter: At-Tiyara (drawing an evil omen from birds, etc.)
Narrated Abu Huraira:
I heard Allah's Messenger (ﷺ) saying, "There is no Tiyara, and the best omen is the Fal." They asked, "What is the Fal?" He said, "A good word that one of you hears (and takes as a good omen).
Sahih al-Bukhari 5754