Well, the Hijri date 18 Rabi Al Awwal 1412 corresponds to the Gregorian date Thursday, 26 September 1991. This date lies in the third month of the Hijri year 1412 AH, which is Rabi Al-Awwal of 1412 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1412/03/18 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 26 September 1991 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rabi Al Awwal 1412 AH to its equivalent Gregorian date.
إِلَى ٱللَّهِ مَرْجِعُكُمْ ۖ وَهُوَ عَلَىٰ كُلِّ شَىْءٍۢ قَدِيرٌ
Unto Allah is your return, and He is Able to do all things.
Surah Hud(11:4)
Sahih al-Bukhari
`Umrah (Minor pilgrimage)
Chapter: What to do to arrive home early?
Narrated Zaid bin Aslam from his father:
I was with Ibn `Umar on the way to Mecca, and he got the news that Safiya bint Abu Ubaid was seriously ill. So, he hastened his pace, and when the twilight disappeared, he dismounted and offered the Maghrib and `Isha' prayers together. Then he said, "I saw that whenever the Prophet (ﷺ) had to hasten when traveling, he would delay the Maghrib prayer and join them together (i.e. offer the Maghrib and the `Isha prayers together).
Sahih al-Bukhari 1805