Well, the Hijri date 18 Shaban 1404 corresponds to the Gregorian date Saturday, 19 May 1984. This date lies in the eighth month of the Hijri year 1404 AH, which is Shaban of 1404 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1404/08/18 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 19 May 1984 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Shaban 1404 AH to its equivalent Gregorian date.
ثُمَّ بَدَا لَهُم مِّنۢ بَعْدِ مَا رَأَوُا۟ ٱلْءَايَٰتِ لَيَسْجُنُنَّهُۥ حَتَّىٰ حِينٍۢ
And it seemed good to them (the men-folk) after they had seen the signs (of his innocence) to imprison him for a time.
Surah Yusuf(12:35)
Sahih al-Bukhari
Good Manners and Form (Al-Adab)
Chapter: Saying "Wailaka."
Narrated Anas bin Malik:
Allah's Messenger (ﷺ) was on a journey and he had a black slave called Anjasha, and he was driving the camels (very fast, and there were women riding on those camels). Allah's Messenger (ﷺ) said, "Waihaka (May Allah be merciful to you), O Anjasha! Drive slowly (the camels) with the glass vessels (women)!"
Sahih al-Bukhari 6161