Well, the Hijri date 18 Jumada Al Oula 1442 corresponds to the Gregorian date Saturday, 2 January 2021. This date lies in the fifth month of the Hijri year 1442 AH, which is Jumada Al-Awwal of 1442 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1442/05/18 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 2 January 2021 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Jumada Al Oula 1442 AH to its equivalent Gregorian date.
وَكُنَّا نُكَذِّبُ بِيَوْمِ ٱلدِّينِ
And we used to deny the Day of Judgment,
Surah Al-Muddaththir(74:46)
Sahih al-Bukhari
Retiring to a Mosque for Remembrance of Allah (I'tikaf)
Chapter: Vow in the pre-Islamic period to perform I'tikaf
Narrated Ibn `Umar:
that `Umar had vowed in the Pre-Islamic period to perform I`tikaf in Al-Masjid-al-Haram. (A subnarrator thinks that `Umar vowed to perform I`tikaf for one night.) Allah's Messenger (ﷺ) said to `Umar, "Fulfill your vow."
Sahih al-Bukhari 2043