Well, the Hijri date 12 Rajab 1440 corresponds to the Gregorian date Tuesday, 19 March 2019. This date lies in the seventh month of the Hijri year 1440 AH, which is Rajab of 1440 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1440/07/12 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 19 March 2019 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Rajab 1440 AH to its equivalent Gregorian date.
أَوَلَمْ يَسِيرُوا۟ فِى ٱلْأَرْضِ فَيَنظُرُوا۟ كَيْفَ كَانَ عَٰقِبَةُ ٱلَّذِينَ مِن قَبْلِهِمْ وَكَانُوٓا۟ أَشَدَّ مِنْهُمْ قُوَّةًۭ ۚ وَمَا كَانَ ٱللَّهُ لِيُعْجِزَهُۥ مِن شَىْءٍۢ فِى ٱلسَّمَٰوَٰتِ وَلَا فِى ٱلْأَرْضِ ۚ إِنَّهُۥ كَانَ عَلِيمًۭا قَدِيرًۭا
Have they not travelled in the land and seen the nature of the consequence for those who were before them, and they were mightier than these in power? Allah is not such that aught in the heavens or in the earth escapeth Him. Lo! He is the Wise, the Mighty.
Surah Faatir(35:44)
Sahih al-Bukhari
Laws of Inheritance (Al-Faraa'id)
Chapter: If someone is converted to Islam through somebody else
Narrated Ibn `Umar:
That Aisha, the mother of the Believers, intended to buy a slave girl in order to manumit her. The slave girl's master said, "We are ready to sell her to you on the condition that her Wala should be for us." Aisha mentioned that to Allah's Messenger (ﷺ) who said, "This (condition) should not prevent you from buying her, for the Wala is for the one who manumits (the slave)."
Sahih al-Bukhari 6757