Well, the Hijri date 1 Rabi Al Thani 1489 corresponds to the Gregorian date Thursday, 24 June 2066. This date lies in the fourth month of the Hijri year 1489 AH, which is Rabi Al-Thani of 1489 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1489/04/01 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 24 June 2066 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rabi Al Thani 1489 AH to its equivalent Gregorian date.
وَٱلَّذِينَ ءَاتَيْنَٰهُمُ ٱلْكِتَٰبَ يَفْرَحُونَ بِمَآ أُنزِلَ إِلَيْكَ ۖ وَمِنَ ٱلْأَحْزَابِ مَن يُنكِرُ بَعْضَهُۥ ۚ قُلْ إِنَّمَآ أُمِرْتُ أَنْ أَعْبُدَ ٱللَّهَ وَلَآ أُشْرِكَ بِهِۦٓ ۚ إِلَيْهِ أَدْعُوا۟ وَإِلَيْهِ مَـَٔابِ
Those unto whom We gave the Scripture rejoice in that which is revealed unto thee. And of the clans there are who deny some of it. Say: I am commanded only that I serve Allah and ascribe unto Him no partner. Unto Him I cry, and unto Him is my return.
Surah Ar-Ra'd(13:36)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: The Ghazwa of Al-Khandaq or Al-Ahzab Battle
Narrated Ibn `Umar:
That the Prophet (ﷺ) inspected him on the day of Uhud while he was fourteen years old, and the Prophet (ﷺ) did not allow him to take part in the battle. He was inspected again by the Prophet (ﷺ) on the day of Al- Khandaq (i.e. battle of the Trench) while he was fifteen years old, and the Prophet (ﷺ) allowed him to take Part in the battle.
Sahih al-Bukhari 4097