Well, the Hijri date 18 Safar 1399 corresponds to the Gregorian date Tuesday, 16 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 Tuesday without any doubt. The Arabic date 1399/02/18 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 16 January 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Safar 1399 AH to its equivalent Gregorian date.
فَإِن تَوَلَّوْا۟ فَقُلْ ءَاذَنتُكُمْ عَلَىٰ سَوَآءٍۢ ۖ وَإِنْ أَدْرِىٓ أَقَرِيبٌ أَم بَعِيدٌۭ مَّا تُوعَدُونَ
But if they are averse, then say: I have warned you all alike, although I know not whether nigh or far is that which ye are promised.
Surah Al-Anbiyaa(21:109)
