Well, the Hijri date 1 Rabi Al Thani 1267 corresponds to the Gregorian date Sunday, 2 February 1851. This date lies in the fourth month of the Hijri year 1267 AH, which is Rabi Al-Thani of 1267 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1267/04/01 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 2 February 1851 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rabi Al Thani 1267 AH to its equivalent Gregorian date.
وَرَفَعْنَا فَوْقَهُمُ ٱلطُّورَ بِمِيثَٰقِهِمْ وَقُلْنَا لَهُمُ ٱدْخُلُوا۟ ٱلْبَابَ سُجَّدًۭا وَقُلْنَا لَهُمْ لَا تَعْدُوا۟ فِى ٱلسَّبْتِ وَأَخَذْنَا مِنْهُم مِّيثَٰقًا غَلِيظًۭا
And We caused the Mount to tower above them at (the taking of) their covenant: and We bade them: Enter the gate, prostrate! and We bode them: Transgress not the Sabbath! and We took from them a firm covenant.
Surah An-Nisaa(4:154)