Well, the Hijri date 1 Shaban 1406 corresponds to the Gregorian date Thursday, 10 April 1986. This date lies in the eighth month of the Hijri year 1406 AH, which is Shaban of 1406 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1406/08/01 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 10 April 1986 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Shaban 1406 AH to its equivalent Gregorian date.
يَٰٓإِبْرَٰهِيمُ أَعْرِضْ عَنْ هَٰذَآ ۖ إِنَّهُۥ قَدْ جَآءَ أَمْرُ رَبِّكَ ۖ وَإِنَّهُمْ ءَاتِيهِمْ عَذَابٌ غَيْرُ مَرْدُودٍۢ
(It was said) O Abraham! Forsake this! Lo! thy Lord's commandment hath gone forth, and lo! there cometh unto them a doom which cannot be repelled.
Surah Hud(11:76)
Sahih al-Bukhari
Accepting Information Given by a Truthful Person
Chapter: Acceptance of the information given by one truthful person in about all matters
Narrated `Abdullah:
The Prophet (ﷺ) led us in Zuhr prayer and prayer five rak`at. Somebody asked him whether the prayer had been increased." He (the Prophet (ﷺ) ) said, "And what is that?" They (the people) replied, "You have prayed five rak`at." Then the Prophet (ﷺ) offered two prostrations (of Sahu) after he had finished his prayer with the Taslim.
Sahih al-Bukhari 7249