Well, the Hijri date 21 Ramadan 1409 corresponds to the Gregorian date Thursday, 27 April 1989. This date lies in the ninth month of the Hijri year 1409 AH, which is Ramadan of 1409 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1409/09/21 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 27 April 1989 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Ramadan 1409 AH to its equivalent Gregorian date.
إِنَّ هَٰذَا مَا كُنتُم بِهِۦ تَمْتَرُونَ
Lo! this is that whereof ye used to doubt.
Surah Ad-Dukhaan(44:50)
Sahih al-Bukhari
Times of the Prayers
Chapter: In severe heat, offer Zuhr prayers when it becomes (a bit) cooler
Narrated Abu Dhar:
The Mu'adh-dhin (call-maker) of the Prophet (ﷺ) pronounced the Adhan (call) for the Zuhr prayer but the Prophet said, "Let it be cooler, let it be cooler." Or said, 'Wait, wait, because the severity of heat is from the raging of the Hell-fire. In severe hot weather, pray when it becomes (a bit) cooler and the shadows of hillocks appear."
Sahih al-Bukhari 535