Well, the Hijri date 1 Rajab 1603 corresponds to the Gregorian date Monday, 28 April 2177. This date lies in the seventh month of the Hijri year 1603 AH, which is Rajab of 1603 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1603/07/01 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 28 April 2177 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rajab 1603 AH to its equivalent Gregorian date.
وَٱسْتَغْفِرُوا۟ رَبَّكُمْ ثُمَّ تُوبُوٓا۟ إِلَيْهِ ۚ إِنَّ رَبِّى رَحِيمٌۭ وَدُودٌۭ
Ask pardon of your Lord and then turn unto Him (repentant). Lo! my Lord is Merciful, Loving.
Surah Hud(11:90)