Well, the Hijri date 26 Rabi Al Thani 1405 corresponds to the Gregorian date Thursday, 17 January 1985. This date lies in the fourth month of the Hijri year 1405 AH, which is Rabi Al-Thani of 1405 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1405/04/26 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 17 January 1985 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Rabi Al Thani 1405 AH to its equivalent Gregorian date.
وَقَوْلِهِمْ إِنَّا قَتَلْنَا ٱلْمَسِيحَ عِيسَى ٱبْنَ مَرْيَمَ رَسُولَ ٱللَّهِ وَمَا قَتَلُوهُ وَمَا صَلَبُوهُ وَلَٰكِن شُبِّهَ لَهُمْ ۚ وَإِنَّ ٱلَّذِينَ ٱخْتَلَفُوا۟ فِيهِ لَفِى شَكٍّۢ مِّنْهُ ۚ مَا لَهُم بِهِۦ مِنْ عِلْمٍ إِلَّا ٱتِّبَاعَ ٱلظَّنِّ ۚ وَمَا قَتَلُوهُ يَقِينًۢا
And because of their saying: We slew the Messiah, Jesus son of Mary, Allah's messenger - they slew him not nor crucified him, but it appeared so unto them; and lo! those who disagree concerning it are in doubt thereof; they have no knowledge thereof save pursuit of a conjecture; they slew him not for certain.
Surah An-Nisaa(4:157)