Well, the Hijri date 20 Jumada Al Akhira 1438 corresponds to the Gregorian date Sunday, 19 March 2017. This date lies in the sixth month of the Hijri year 1438 AH, which is Jumada Al-Thani of 1438 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1438/06/20 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 19 March 2017 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Jumada Al Akhira 1438 AH to its equivalent Gregorian date.
طَاعَةٌۭ وَقَوْلٌۭ مَّعْرُوفٌۭ ۚ فَإِذَا عَزَمَ ٱلْأَمْرُ فَلَوْ صَدَقُوا۟ ٱللَّهَ لَكَانَ خَيْرًۭا لَّهُمْ
Obedience and a civil word. Then, when the matter is determined, if they are loyal to Allah it will be well for them.
Surah Muhammad(47:21)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah the Most High: "...When they gave their Bai'a (pledge) to you (O Muḥammad pbuh) under the tree..." (V.48:18)
Narrated Jabir:
We were one thousand and four hundred on the Day of Al-Hudaibiya.
Sahih al-Bukhari 4840