Well, the Hijri date 1 Dhul Hijjah 1399 corresponds to the Gregorian date Monday, 22 October 1979. This date lies in the twelfth month of the Hijri year 1399 AH, which is Dhu Al-Hijjah of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1399/12/01 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 22 October 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Dhul Hijjah 1399 AH to its equivalent Gregorian date.
ثُمَّ بَعَثْنَا مِنۢ بَعْدِهِم مُّوسَىٰ وَهَٰرُونَ إِلَىٰ فِرْعَوْنَ وَمَلَإِي۟هِۦ بِـَٔايَٰتِنَا فَٱسْتَكْبَرُوا۟ وَكَانُوا۟ قَوْمًۭا مُّجْرِمِينَ
Surah Yunus(10:75)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: Whoever cuts short As-Salat (the prayer) on hearing the cries of a child.
Narrated Anas bin Malik:
I never prayed behind any Imam a prayer lighter and more perfect than that behind the Prophet (ﷺ) and he used to cut short the prayer whenever he heard the cries of a child lest he should put the child's mother to trial.
Sahih al-Bukhari 708
