Well, the Hijri date 7 Safar 1409 corresponds to the Gregorian date Sunday, 18 September 1988. This date lies in the second month of the Hijri year 1409 AH, which is Safar of 1409 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1409/02/07 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 18 September 1988 to its equivalent Arabic date.
The following is the conversion of the Arabic date 7 Safar 1409 AH to its equivalent Gregorian date.
فَقَضَىٰهُنَّ سَبْعَ سَمَٰوَاتٍۢ فِى يَوْمَيْنِ وَأَوْحَىٰ فِى كُلِّ سَمَآءٍ أَمْرَهَا ۚ وَزَيَّنَّا ٱلسَّمَآءَ ٱلدُّنْيَا بِمَصَٰبِيحَ وَحِفْظًۭا ۚ ذَٰلِكَ تَقْدِيرُ ٱلْعَزِيزِ ٱلْعَلِيمِ
Then He ordained them seven heavens in two Days and inspired in each heaven its mandate; and We decked the nether heaven with lamps, and rendered it inviolable. That is the measuring of the Mighty, the Knower.
Surah Fussilat(41:12)