Well, the Hijri date 28 Dhul Qidah 1406 corresponds to the Gregorian date Monday, 4 August 1986. This date lies in the eleventh month of the Hijri year 1406 AH, which is Dhu Al-Qidah of 1406 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1406/11/28 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 4 August 1986 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Dhul Qidah 1406 AH to its equivalent Gregorian date.
وَلَقَدْ كُذِّبَتْ رُسُلٌۭ مِّن قَبْلِكَ فَصَبَرُوا۟ عَلَىٰ مَا كُذِّبُوا۟ وَأُوذُوا۟ حَتَّىٰٓ أَتَىٰهُمْ نَصْرُنَا ۚ وَلَا مُبَدِّلَ لِكَلِمَٰتِ ٱللَّهِ ۚ وَلَقَدْ جَآءَكَ مِن نَّبَإِى۟ ٱلْمُرْسَلِينَ
Messengers indeed have been denied before thee, and they were patient under the denial and the persecution till Our succour reached them. There is none to alter the decisions of Allah. Already there hath reached thee (somewhat) of the tidings of the messengers (We sent before).
Surah Al-An'aam(6:34)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: Appointment of a ruler for Khaibar by the Prophet (saws)
Narrated Abu Sa`id Al-Khudri and Abu Huraira:
Allah's Messenger (ﷺ) appointed a man as the ruler of Khaibar who later brought some Janib (i.e. dates of good quality) to the Prophet. On that, Allah's Messenger (ﷺ) said (to him). "Are all the dates of Khaibar like this?" He said, "No, by Allah, O Allah's Messenger (ﷺ)! But we take one Sa of these (dates of good quality) for two or three Sa's of other dates (of inferior quality)." On that, Allah's Messenger (ﷺ) said, "Do not do so, but first sell the inferior quality dates for money and then with that money, buy Janib."
Sahih al-Bukhari 4244, 4245