Well, the Hijri date 21 Shawwal 1406 corresponds to the Gregorian date Saturday, 28 June 1986. This date lies in the tenth month of the Hijri year 1406 AH, which is Shawwal of 1406 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1406/10/21 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 28 June 1986 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1406 AH to its equivalent Gregorian date.
أُو۟لَٰٓئِكَ عَلَىٰ هُدًۭى مِّن رَّبِّهِمْ ۖ وَأُو۟لَٰٓئِكَ هُمُ ٱلْمُفْلِحُونَ
Such have guidance from their Lord. Such are the successful.
Surah Luqman(31:5)
Sahih al-Bukhari
Expiation for Unfulfilled Oaths
Chapter: To say: “In sha’ Allah” while taking an oath
Narrated Abu Huraira:
(The Prophet) Solomon said, "Tonight I will sleep with (my) ninety wives, each of whom will get a male child who will fight for Allah's Cause." On that, his companion (Sufyan said that his companion was an angel) said to him, "Say, "If Allah will (Allah willing)." But Solomon forgot (to say it). He slept with all his wives, but none of the women gave birth to a child, except one who gave birth to a halfboy. Abu Huraira added: The Prophet (ﷺ) said, "If Solomon had said, "If Allah will" (Allah willing), he would not have been unsuccessful in his action, and would have attained what he had desired." Once Abu Huraira added: Allah apostle said, "If he had accepted."
Sahih al-Bukhari 6720