Well, the Hijri date 8 Muharram 1439 corresponds to the Gregorian date Thursday, 28 September 2017. This date lies in the first month of the Hijri year 1439 AH, which is Muharram of 1439 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1439/01/08 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 28 September 2017 to its equivalent Arabic date.
The following is the conversion of the Arabic date 8 Muharram 1439 AH to its equivalent Gregorian date.
فَذَرْهُمْ يَخُوضُوا۟ وَيَلْعَبُوا۟ حَتَّىٰ يُلَٰقُوا۟ يَوْمَهُمُ ٱلَّذِى يُوعَدُونَ
So let them flounder (in their talk) and play until they meet the Day which they are promised.
Surah Az-Zukhruf(43:83)