Well, the Hijri date 12 Rajab 1400 corresponds to the Gregorian date Monday, 26 May 1980. This date lies in the seventh month of the Hijri year 1400 AH, which is Rajab of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1400/07/12 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 May 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Rajab 1400 AH to its equivalent Gregorian date.
وَلَئِن سَأَلْتَهُمْ لَيَقُولُنَّ إِنَّمَا كُنَّا نَخُوضُ وَنَلْعَبُ ۚ قُلْ أَبِٱللَّهِ وَءَايَٰتِهِۦ وَرَسُولِهِۦ كُنتُمْ تَسْتَهْزِءُونَ
Surah At-Tawba(9:65)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: The sickness of the Prophet (saws) and his death
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`Aisha added, "I argued with Allah's Messenger (ﷺ) repeatedly about that matter (i.e. his order that Abu Bakr should lead the people in prayer in his place when he was ill), and what made me argue so much, was, that it never occurred to my mind that after the Prophet, the people would ever love a man who had taken his place, and I felt that anybody standing in his place, would be a bad omen to the people, so I wanted Allah's Messenger (ﷺ) to give up the idea of choosing Abu Bakr (to lead the people in prayer).
Sahih al-Bukhari 4445
