Well, the Hijri date 7 Rabi Al Awwal 1255 corresponds to the Gregorian date Monday, 20 May 1839. This date lies in the third month of the Hijri year 1255 AH, which is Rabi Al-Awwal of 1255 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1255/03/07 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 20 May 1839 to its equivalent Arabic date.
The following is the conversion of the Arabic date 7 Rabi Al Awwal 1255 AH to its equivalent Gregorian date.
فَأَمَّا ٱلَّذِينَ شَقُوا۟ فَفِى ٱلنَّارِ لَهُمْ فِيهَا زَفِيرٌۭ وَشَهِيقٌ
As for those who will be wretched (on that day) they will be in the Fire; sighing and wailing will be their portion therein,
Surah Hud(11:106)