Well, the Hijri date 20 Jumada Al Oula 1358 corresponds to the Gregorian date Friday, 7 July 1939. This date lies in the fifth month of the Hijri year 1358 AH, which is Jumada Al-Awwal of 1358 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1358/05/20 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 7 July 1939 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Jumada Al Oula 1358 AH to its equivalent Gregorian date.
إِلَىٰ يَوْمِ ٱلْوَقْتِ ٱلْمَعْلُومِ
Till the Day of appointed time.
Surah Al-Hijr(15:38)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: To give a Bai'a for not to flee during a battle
Narrated Yazid bin Ubaid:
Salama said, "I gave the Pledge of allegiance (Al-Ridwan) to Allah's Messenger (ﷺ) and then I moved to the shade of a tree. When the number of people around the Prophet (ﷺ) diminished, he said, 'O Ibn Al-Akwa` ! Will you not give to me the pledge of Allegiance?' I replied, 'O Allah's Messenger (ﷺ)! I have already given to you the pledge of Allegiance.' He said, 'Do it again.' So I gave the pledge of allegiance for the second time." I asked 'O Abu Muslim! For what did you give he pledge of Allegiance on that day?" He replied, "We gave the pledge of Allegiance for death."
Sahih al-Bukhari 2960