Well, the Hijri date 18 Safar 1400 corresponds to the Gregorian date Sunday, 6 January 1980. This date lies in the second month of the Hijri year 1400 AH, which is Safar of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1400/02/18 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 6 January 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Safar 1400 AH to its equivalent Gregorian date.
وَٱضْمُمْ يَدَكَ إِلَىٰ جَنَاحِكَ تَخْرُجْ بَيْضَآءَ مِنْ غَيْرِ سُوٓءٍ ءَايَةً أُخْرَىٰ
And thrust thy hand within thine armpit, it will come forth white without hurt. (That will be) another token.
Surah Taa-Haa(20:22)
Sahih al-Bukhari
Beginning of Creation
Chapter: The characteristics of Paradise, and the fact that it has already been created
Narrated Sahl bin Sa`d:
The Prophet (ﷺ) said, "Verily! 70,000 or 700,000 of my followers will enter Paradise altogether; so that the first and the last amongst them will enter at the same time, and their faces will be glittering like the bright full moon."
Sahih al-Bukhari 3247