Well, the Hijri date 18 Ramadan 1423 corresponds to the Gregorian date Saturday, 23 November 2002. This date lies in the ninth month of the Hijri year 1423 AH, which is Ramadan of 1423 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1423/09/18 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 23 November 2002 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Ramadan 1423 AH to its equivalent Gregorian date.
عَسَىٰ رَبُّنَآ أَن يُبْدِلَنَا خَيْرًۭا مِّنْهَآ إِنَّآ إِلَىٰ رَبِّنَا رَٰغِبُونَ
It may be that our Lord will give us better than this in place thereof. Lo! we beseech our Lord.
Surah Al-Qalam(68:32)
Sahih al-Bukhari
Retiring to a Mosque for Remembrance of Allah (I'tikaf)
Chapter: I'tikaf without fasting
Narrated `Abdullah bin `Umar:
`Umar bin Al-Khattab said, "O Allah's Messenger (ﷺ)! I vowed in the Pre-Islamic period to perform I`tikaf in Al-Masjid-al-Haram for one night." The Prophet (ﷺ) said, "Fulfill your vow." So, he performed I`tikaf for one night.
Sahih al-Bukhari 2042