Well, the Hijri date 11 Ramadan 1390 corresponds to the Gregorian date Tuesday, 10 November 1970. This date lies in the ninth month of the Hijri year 1390 AH, which is Ramadan of 1390 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1390/09/11 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 November 1970 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Ramadan 1390 AH to its equivalent Gregorian date.
إِن تُصِبْكَ حَسَنَةٌۭ تَسُؤْهُمْ ۖ وَإِن تُصِبْكَ مُصِيبَةٌۭ يَقُولُوا۟ قَدْ أَخَذْنَآ أَمْرَنَا مِن قَبْلُ وَيَتَوَلَّوا۟ وَّهُمْ فَرِحُونَ
Surah At-Tawba(9:50)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
Allah's Statement: "...It (Hell) will say: 'Are there any more (to come)?" (V.50:30)
Narrated Anas:
The Prophet (ﷺ) said, "The people will be thrown into the (Hell) Fire and it will say: "Are there any more (to come)?' (50.30) till Allah puts His Foot over it and it will say, 'Qati! Qati! (Enough Enough!)'"
Sahih al-Bukhari 4848