Well, the Hijri date 10 Rabi Al Thani 1400 corresponds to the Gregorian date Tuesday, 26 February 1980. This date lies in the fourth month of the Hijri year 1400 AH, which is Rabi Al-Thani of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1400/04/10 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 26 February 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 10 Rabi Al Thani 1400 AH to its equivalent Gregorian date.
وَمَنْ أَظْلَمُ مِمَّن مَّنَعَ مَسَٰجِدَ ٱللَّهِ أَن يُذْكَرَ فِيهَا ٱسْمُهُۥ وَسَعَىٰ فِى خَرَابِهَآ ۚ أُو۟لَٰٓئِكَ مَا كَانَ لَهُمْ أَن يَدْخُلُوهَآ إِلَّا خَآئِفِينَ ۚ لَهُمْ فِى ٱلدُّنْيَا خِزْىٌۭ وَلَهُمْ فِى ٱلْءَاخِرَةِ عَذَابٌ عَظِيمٌۭ
And who doth greater wrong than he who forbiddeth the approach to the sanctuaries of Allah lest His name should be mentioned therein, and striveth for their ruin. As for such, it was never meant that they should enter them except in fear. Theirs in the world is ignominy and theirs in the Hereafter is an awful doom.
Surah Al-Baqara(2:114)