Well, the Hijri date 28 Rajab 1439 corresponds to the Gregorian date Saturday, 14 April 2018. This date lies in the seventh month of the Hijri year 1439 AH, which is Rajab of 1439 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1439/07/28 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 14 April 2018 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Rajab 1439 AH to its equivalent Gregorian date.
أَلَمْ تَرَ إِلَى ٱلَّذِينَ أُوتُوا۟ نَصِيبًۭا مِّنَ ٱلْكِتَٰبِ يُؤْمِنُونَ بِٱلْجِبْتِ وَٱلطَّٰغُوتِ وَيَقُولُونَ لِلَّذِينَ كَفَرُوا۟ هَٰٓؤُلَآءِ أَهْدَىٰ مِنَ ٱلَّذِينَ ءَامَنُوا۟ سَبِيلًا
Hast thou not seen those unto whom a portion of the Scripture hath been given, how they believe in idols and false deities, and how they say of those (idolaters) who disbelieve: "These are more rightly guided than those who believe"?
Surah An-Nisaa(4:51)