Well, the Hijri date 18 Shawwal 1477 corresponds to the Gregorian date Saturday, 15 May 2055. This date lies in the tenth month of the Hijri year 1477 AH, which is Shawwal of 1477 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1477/10/18 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 15 May 2055 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Shawwal 1477 AH to its equivalent Gregorian date.
إِذْ يَتَلَقَّى ٱلْمُتَلَقِّيَانِ عَنِ ٱلْيَمِينِ وَعَنِ ٱلشِّمَالِ قَعِيدٌۭ
When the two Receivers receive (him), seated on the right hand and on the left,
Surah Qaaf(50:17)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah the Most High: "So (Allah) revealed to His slave [Muḥammad pbuh through Jibrīl (Gabriel a.s.)] whatever He revealed." (V.53:10)
Narrated Ash-Shaibani:
I asked Zirr about the Statement of Allah: 'And was at a distance of but two bow-lengths or (even) nearer. So did Allah convey the Inspiration to His slave (Gabriel) and then he (Gabriel) conveyed that to Muhammad.' (53.10) He said, "Abdullah (bin Mas`ud) informed us that Muhammad had seen Gabriel with six hundred wings."
Sahih al-Bukhari 4857