Well, the Hijri date 23 Rajab 1399 corresponds to the Gregorian date Monday, 18 June 1979. This date lies in the seventh month of the Hijri year 1399 AH, which is Rajab of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1399/07/23 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 18 June 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 23 Rajab 1399 AH to its equivalent Gregorian date.
وَنَجَّيْنَٰهُ وَلُوطًا إِلَى ٱلْأَرْضِ ٱلَّتِى بَٰرَكْنَا فِيهَا لِلْعَٰلَمِينَ
And We rescued him and Lot (and brought them) to the land which We have blessed for (all) peoples.
Surah Al-Anbiyaa(21:71)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: The merits of Al-Ansar
Narrated Anas:
On the day of the Conquest of Mecca, when the Prophet (ﷺ) had given (from the booty) the Quraish, the Ansar said, "By Allah, this is indeed very strange: While our swords are still dribbling with the blood of Quraish, our war booty are distributed amongst them." When this news reached the Prophet (ﷺ) he called the Ansar and said, "What is this news that has reached me from you?" They used not to tell lies, so they replied, "What has reached you is true." He said, "Doesn't it please you that the people take the booty to their homes and you take Allah's Messenger (ﷺ) to your homes? If the Ansar took their way through a valley or a mountain pass, I would take the Ansar's valley or a mountain pass."
Sahih al-Bukhari 3778