Well, the Hijri date 18 Muharram 1423 corresponds to the Gregorian date Monday, 1 April 2002. This date lies in the first month of the Hijri year 1423 AH, which is Muharram of 1423 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1423/01/18 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 1 April 2002 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Muharram 1423 AH to its equivalent Gregorian date.
أَيَطْمَعُ كُلُّ ٱمْرِئٍۢ مِّنْهُمْ أَن يُدْخَلَ جَنَّةَ نَعِيمٍۢ
Doth every man among them hope to enter the Garden of Delight?
Surah Al-Ma'aarij(70:38)
Sahih al-Bukhari
Fasting
Chapter: "Start observing Saum on seeing the crescent of Ramadan, and stop on seeing the crescent (of Shawwal)."
Narrated Um Salama:
The Prophet (ﷺ) vowed to keep aloof from his wives for a period of one month, and after the completion of 29 days he went either in the morning or in the afternoon to his wives. Someone said to him "You vowed that you would not go to your wives for one month." He replied, "The month is of 29 days."
Sahih al-Bukhari 1910