Well, the Hijri date 21 Rabi Al Thani 1408 corresponds to the Gregorian date Saturday, 12 December 1987. This date lies in the fourth month of the Hijri year 1408 AH, which is Rabi Al-Thani of 1408 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1408/04/21 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 12 December 1987 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1408 AH to its equivalent Gregorian date.
وَسْـَٔلْهُمْ عَنِ ٱلْقَرْيَةِ ٱلَّتِى كَانَتْ حَاضِرَةَ ٱلْبَحْرِ إِذْ يَعْدُونَ فِى ٱلسَّبْتِ إِذْ تَأْتِيهِمْ حِيتَانُهُمْ يَوْمَ سَبْتِهِمْ شُرَّعًۭا وَيَوْمَ لَا يَسْبِتُونَ ۙ لَا تَأْتِيهِمْ ۚ كَذَٰلِكَ نَبْلُوهُم بِمَا كَانُوا۟ يَفْسُقُونَ
Surah Al-A'raaf(7:163)
Sahih al-Bukhari
Oneness, Uniqueness of Allah (Tawheed)
Chapter: “…And His Throne was on the water…”
Narrated Anas bin Malik:
The Verse of Al-Hijab (veiling of women) was revealed in connection with Zainab bint Jahsh. (On the day of her marriage with him) the Prophet (ﷺ) gave a wedding banquet with bread and meat; and she used to boast before other wives of the Prophet (ﷺ) and used to say, "Allah married me (to the Prophet (ﷺ) in the Heavens."
Sahih al-Bukhari 7421