Well, the Hijri date 12 Rabi Al Thani 1479 corresponds to the Gregorian date Saturday, 21 October 2056. This date lies in the fourth month of the Hijri year 1479 AH, which is Rabi Al-Thani of 1479 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1479/04/12 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 21 October 2056 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Rabi Al Thani 1479 AH to its equivalent Gregorian date.
فَإِن كُنتَ فِى شَكٍّۢ مِّمَّآ أَنزَلْنَآ إِلَيْكَ فَسْـَٔلِ ٱلَّذِينَ يَقْرَءُونَ ٱلْكِتَٰبَ مِن قَبْلِكَ ۚ لَقَدْ جَآءَكَ ٱلْحَقُّ مِن رَّبِّكَ فَلَا تَكُونَنَّ مِنَ ٱلْمُمْتَرِينَ
And if thou (Muhammad) art in doubt concerning that which We reveal unto thee, then question those who read the Scripture (that was) before thee. Verily the Truth from thy Lord hath come unto thee. So be not thou of the waverers.
Surah Yunus(10:94)
Sahih al-Bukhari
Prophets
Chapter: Allah's Statement: "And tell them about the guests of Ibrahim."
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "We are more liable to be in doubt than Abraham when he said, 'My Lord! Show me how You give life to the dead." . He (i.e. Allah) slid: 'Don't you believe then?' He (i.e. Abraham) said: "Yes, but (I ask) in order to be stronger in Faith." (2.260) And may Allah send His Mercy on Lot! He wished to have a powerful support. If I were to stay in prison for such a long time as Joseph did I would have accepted the offer (of freedom without insisting on having my guiltless less declared).
Sahih al-Bukhari 3372