Well, the Hijri date 1 Rabi Al Thani 1264 corresponds to the Gregorian date Monday, 6 March 1848. This date lies in the fourth month of the Hijri year 1264 AH, which is Rabi Al-Thani of 1264 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1264/04/01 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 6 March 1848 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rabi Al Thani 1264 AH to its equivalent Gregorian date.
فَذُوقُوا۟ بِمَا نَسِيتُمْ لِقَآءَ يَوْمِكُمْ هَٰذَآ إِنَّا نَسِينَٰكُمْ ۖ وَذُوقُوا۟ عَذَابَ ٱلْخُلْدِ بِمَا كُنتُمْ تَعْمَلُونَ
So taste (the evil of your deeds). Forasmuch as ye forgot the meeting of this your day, lo! We forget you. Taste the doom of immortality because of what ye used to do.
Surah As-Sajda(32:14)