Well, the Hijri date 18 Shawwal 1419 corresponds to the Gregorian date Thursday, 4 February 1999. This date lies in the tenth month of the Hijri year 1419 AH, which is Shawwal of 1419 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1419/10/18 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 4 February 1999 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Shawwal 1419 AH to its equivalent Gregorian date.
وَقُل رَّبِّ أَنزِلْنِى مُنزَلًۭا مُّبَارَكًۭا وَأَنتَ خَيْرُ ٱلْمُنزِلِينَ
And say: My Lord! Cause me to land at a blessed landing-place, for Thou art Best of all who bring to land.
Surah Al-Muminoon(23:29)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah the Exalted: "...O you who believe! Enter not the Prophet's houses, except when leave is given to you for a meal... (up to) ... Verily! With Allah that shall be an enormity." (V.33:53)
Narrated `Umar:
I said, "O Allah's Messenger (ﷺ)! Good and bad persons enter upon you, so I suggest that you order the mothers of the Believers (i.e. your wives) to observe veils." Then Allah revealed the Verses of Al- Hijab.
Sahih al-Bukhari 4790