Well, the Hijri date 27 Safar 1605 corresponds to the Gregorian date Monday, 7 December 2178. This date lies in the second month of the Hijri year 1605 AH, which is Safar of 1605 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1605/02/27 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 7 December 2178 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Safar 1605 AH to its equivalent Gregorian date.
فَقَدْ كَذَّبُوا۟ فَسَيَأْتِيهِمْ أَنۢبَٰٓؤُا۟ مَا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ
Now they have denied (the Truth); but there will come unto them tidings of that whereat they used to scoff.
Surah Ash-Shu'araa(26:6)