Well, the Hijri date 20 Shawwal 1418 corresponds to the Gregorian date Tuesday, 17 February 1998. This date lies in the tenth month of the Hijri year 1418 AH, which is Shawwal of 1418 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1418/10/20 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 17 February 1998 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shawwal 1418 AH to its equivalent Gregorian date.
يَٰحَسْرَةً عَلَى ٱلْعِبَادِ ۚ مَا يَأْتِيهِم مِّن رَّسُولٍ إِلَّا كَانُوا۟ بِهِۦ يَسْتَهْزِءُونَ
Ah, the anguish for the bondmen! Never came there unto them a messenger but they did mock him!
Surah Yaseen(36:30)
Sahih al-Bukhari
Knowledge
Chapter: (What is said regarding) the memorization of (religious) knowledge
Narrated Abu Huraira:
People say that I have narrated many Hadiths (The Prophet's narration). Had it not been for two verses in the Qur'an, I would not have narrated a single Hadith, and the verses are: "Verily those who conceal the clear sign and the guidance which We have sent down . . . (up to) Most Merciful." (2:159-160). And no doubt our Muhajir (emigrant) brothers used to be busy in the market with their business (bargains) and our Ansari brothers used to be busy with their property (agriculture). But I (Abu Huraira) used to stick to Allah's Messenger (ﷺ) contented with what will fill my stomach and I used to attend that which they used not to attend and I used to memorize that which they used not to memorize.
Sahih al-Bukhari 118