Well, the Hijri date 21 Jumada Al Akhira 1354 corresponds to the Gregorian date Thursday, 19 September 1935. This date lies in the sixth month of the Hijri year 1354 AH, which is Jumada Al-Thani of 1354 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1354/06/21 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.
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The following is the conversion of the Gregorian date 19 September 1935 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Jumada Al Akhira 1354 AH to its equivalent Gregorian date.
فَضَرَبْنَا عَلَىٰٓ ءَاذَانِهِمْ فِى ٱلْكَهْفِ سِنِينَ عَدَدًۭا
Then We sealed up their hearing in the Cave for a number of years.
Surah Al-Kahf(18:11)
Sahih al-Bukhari
Hajj (Pilgrimage)
Chapter: Tawaf of Al-Qarin
Narrated Nafi`:
`Abdullah bin `Abdullah bin `Umar and his riding animal entered the house of Ibn `Umar. He (the son of Ibn `Umar) said, "I fear that this year a battle might take place between the people and you might be prevented from going to the Ka`ba. I suggest that you should stay here." Ibn `Umar said, "Once Allah's Messenger (ﷺ) set out for the pilgrimage, and the pagans of Quraish intervened between him and the Ka`ba. So, if the people intervened between me and the Ka`ba, I would do the same as Allah's Messenger (ﷺ) had done . . . "Verily, in Allah's Messenger (ﷺ) you have a good example." Then he added, "I make you a witness that I have intended to perform Hajj along with `Umra." After arriving at Mecca, Ibn `Umar performed one Tawaf only (between Safa and Marwa).
Sahih al-Bukhari 1639