Well, the Hijri date 18 Rabi Al Awwal 1408 corresponds to the Gregorian date Monday, 9 November 1987. This date lies in the third month of the Hijri year 1408 AH, which is Rabi Al-Awwal of 1408 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1408/03/18 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 9 November 1987 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rabi Al Awwal 1408 AH to its equivalent Gregorian date.
وَإِذْ يَمْكُرُ بِكَ ٱلَّذِينَ كَفَرُوا۟ لِيُثْبِتُوكَ أَوْ يَقْتُلُوكَ أَوْ يُخْرِجُوكَ ۚ وَيَمْكُرُونَ وَيَمْكُرُ ٱللَّهُ ۖ وَٱللَّهُ خَيْرُ ٱلْمَٰكِرِينَ
And when those who disbelieve plot against thee (O Muhammad) to wound thee fatally, or to kill thee or to drive thee forth; they plot, but Allah (also) plotteth; and Allah is the best of plotters.
Surah Al-Anfaal(8:30)