Well, the Hijri date 9 Safar 1399 corresponds to the Gregorian date Sunday, 7 January 1979. This date lies in the second month of the Hijri year 1399 AH, which is Safar of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1399/02/09 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 January 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 9 Safar 1399 AH to its equivalent Gregorian date.
وَمَن يَعْمَلْ مِنَ ٱلصَّٰلِحَٰتِ مِن ذَكَرٍ أَوْ أُنثَىٰ وَهُوَ مُؤْمِنٌۭ فَأُو۟لَٰٓئِكَ يَدْخُلُونَ ٱلْجَنَّةَ وَلَا يُظْلَمُونَ نَقِيرًۭا
And whoso doeth good works, whether of male or female, and he (or she) is a believer, such will enter paradise and they will not be wronged the dint in a date-stone.
Surah An-Nisaa(4:124)
Sahih al-Bukhari
Representation, Authorization, Business by Proxy
Chapter: To depute a person to carry out a punishment
Narrated Zaid bin Khalid and Abu Huraira:
The Prophet (ﷺ) said, "O Unais! Go to the wife of this (man) and if she confesses (that she has committed illegal sexual intercourse), then stone her to death."
Sahih al-Bukhari 2314, 2315