Well, the Hijri date 18 Rajab 1408 corresponds to the Gregorian date Sunday, 6 March 1988. This date lies in the seventh month of the Hijri year 1408 AH, which is Rajab of 1408 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1408/07/18 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 6 March 1988 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rajab 1408 AH to its equivalent Gregorian date.
لَقَدْ جَآءَكُمْ رَسُولٌۭ مِّنْ أَنفُسِكُمْ عَزِيزٌ عَلَيْهِ مَا عَنِتُّمْ حَرِيصٌ عَلَيْكُم بِٱلْمُؤْمِنِينَ رَءُوفٌۭ رَّحِيمٌۭ
There hath come unto you a messenger, (one) of yourselves, unto whom aught that ye are overburdened is grievous, full of concern for you, for the believers full of pity, merciful.
Surah At-Tawba(9:128)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
Surat an-Nas (Humankind)
Narrated Zirr bin Hubaish:
I asked Ubai bin Ka`b, "O Abu AlMundhir! Your brother, Ibn Mas`ud said so-and-so (i.e., the two Mu'awwidh-at do not belong to the Qur'an)." Ubai said, "I asked Allah's Messenger (ﷺ) about them, and he said, 'They have been revealed to me, and I have recited them (as a part of the Qur'an)," So Ubai added, "So we say as Allah's Messenger (ﷺ) has said."
Sahih al-Bukhari 4977
