Well, the Hijri date 30 Dhul Hijjah 1439 corresponds to the Gregorian date Monday, 10 September 2018. This date lies in the twelfth month of the Hijri year 1439 AH, which is Dhu Al-Hijjah of 1439 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1439/12/30 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 September 2018 to its equivalent Arabic date.
The following is the conversion of the Arabic date 30 Dhul Hijjah 1439 AH to its equivalent Gregorian date.
أَن تَقُولُوٓا۟ إِنَّمَآ أُنزِلَ ٱلْكِتَٰبُ عَلَىٰ طَآئِفَتَيْنِ مِن قَبْلِنَا وَإِن كُنَّا عَن دِرَاسَتِهِمْ لَغَٰفِلِينَ
Lest ye should say: The Scripture was revealed only to two sects before us, and we in sooth were unaware of what they read;
Surah Al-An'aam(6:156)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
"It is made lawful for you to have sexual relation with your wives on the night of As-Saum (the fasts) ... (till) ... and seek that which Allah has ordained for you (offspring).. ." (V.2:187)
Narrated Al-Bara':
When the order of compulsory fasting of Ramadan was revealed, the people did not have sexual relations with their wives for the whole month of Ramadan, but some men cheated themselves (by violating that restriction). So Allah revealed: "Allah is aware that you were deceiving yourselves but He accepted your repentance and forgave you.." (3.187)
Sahih al-Bukhari 4508