Well, the Hijri date 20 Ramadan 1407 corresponds to the Gregorian date Monday, 18 May 1987. This date lies in the ninth month of the Hijri year 1407 AH, which is Ramadan of 1407 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1407/09/20 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 18 May 1987 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Ramadan 1407 AH to its equivalent Gregorian date.
۞ يَوْمَ يَجْمَعُ ٱللَّهُ ٱلرُّسُلَ فَيَقُولُ مَاذَآ أُجِبْتُمْ ۖ قَالُوا۟ لَا عِلْمَ لَنَآ ۖ إِنَّكَ أَنتَ عَلَّٰمُ ٱلْغُيُوبِ
In the day when Allah gathereth together the messengers, and saith: What was your response (from mankind)? they say: We have no knowledge. Lo! Thou, only Thou art the Knower of Things Hidden,
Surah Al-Maaida(5:109)
Sahih al-Bukhari
Fasting
Chapter: Should it be said "Ramadan" or "the month of Ramadan"? And whoever thinks that both are permissible
Narrated Ibn `Umar:
I heard Allah's Messenger (ﷺ) saying, "When you see the crescent (of the month of Ramadan), start fasting, and when you see the crescent (of the month of Shawwal), stop fasting; and if the sky is overcast (and you can't see it) then regard the month of Ramadan as of 30 days."
Sahih al-Bukhari 1900
