Well, the Hijri date 5 Ramadan 1431 corresponds to the Gregorian date Sunday, 15 August 2010. This date lies in the ninth month of the Hijri year 1431 AH, which is Ramadan of 1431 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1431/09/05 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 15 August 2010 to its equivalent Arabic date.
The following is the conversion of the Arabic date 5 Ramadan 1431 AH to its equivalent Gregorian date.
۞ لَهُمْ دَارُ ٱلسَّلَٰمِ عِندَ رَبِّهِمْ ۖ وَهُوَ وَلِيُّهُم بِمَا كَانُوا۟ يَعْمَلُونَ
For them is the abode of peace with their Lord. He will be their Protecting Friend because of what they used to do.
Surah Al-An'aam(6:127)
Sahih al-Bukhari
Forgetfulness in Prayer
Chapter: To say Takbir in the prostrations of Sahw
Narrated Abu Huraira:
The Prophet (ﷺ) offered one of the evening prayers (the sub-narrator Muhammad said, "I think that it was most probably the `Asr prayer") and he finished it after offering two rak`at only. He then stood near a price of wood in front of the Mosque and put his hand over it. Abu Bakr and `Umar were amongst those who were present, but they dared not talk to him about that (because of excessive respect for him), and those who were in a hurry went out. They said, "Has the prayer been reduced?" A man who was called Dhul-Yadain by the Prophet (ﷺ) said (to the Prophet), "Has the prayer been reduced or have you forgotten?" He said, "Neither have I forgotten, nor has the prayer been reduced." He said, "Certainly you have forgotten." So the Prophet (ﷺ) offered two more rak`at and performed Taslim and then said Takbir and performed a prostration of Sahu like his ordinary prostration or a bit longer and then raised his head and said Takbir and then put his head down and performed a prostration like his ordinary prostration or a bit longer, and then raised his head and said Takbir.
Sahih al-Bukhari 1229