Well, the Hijri date 1 Rajab 1614 corresponds to the Gregorian date Sunday, 30 December 2187. This date lies in the seventh month of the Hijri year 1614 AH, which is Rajab of 1614 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1614/07/01 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 30 December 2187 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rajab 1614 AH to its equivalent Gregorian date.
وَلَقَدْ ءَاتَيْنَا دَاوُۥدَ وَسُلَيْمَٰنَ عِلْمًۭا ۖ وَقَالَا ٱلْحَمْدُ لِلَّهِ ٱلَّذِى فَضَّلَنَا عَلَىٰ كَثِيرٍۢ مِّنْ عِبَادِهِ ٱلْمُؤْمِنِينَ
And We verily gave knowledge unto David and Solomon, and they said: Praise be to Allah, Who hath preferred us above many of His believing slaves!
Surah An-Naml(27:15)