Well, the Hijri date 3 Shawwal 1489 corresponds to the Gregorian date Monday, 20 December 2066. This date lies in the tenth month of the Hijri year 1489 AH, which is Shawwal of 1489 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1489/10/03 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 20 December 2066 to its equivalent Arabic date.
The following is the conversion of the Arabic date 3 Shawwal 1489 AH to its equivalent Gregorian date.
وَإِذَا قِيلَ لَهُمْ ءَامِنُوا۟ بِمَآ أَنزَلَ ٱللَّهُ قَالُوا۟ نُؤْمِنُ بِمَآ أُنزِلَ عَلَيْنَا وَيَكْفُرُونَ بِمَا وَرَآءَهُۥ وَهُوَ ٱلْحَقُّ مُصَدِّقًۭا لِّمَا مَعَهُمْ ۗ قُلْ فَلِمَ تَقْتُلُونَ أَنۢبِيَآءَ ٱللَّهِ مِن قَبْلُ إِن كُنتُم مُّؤْمِنِينَ
And when it is said unto them: Believe in that which Allah hath revealed, they say: We believe in that which was revealed unto us. And they disbelieve in that which cometh after it, though it is the truth confirming that which they possess. Say (unto them, O Muhammad): Why then slew ye the prophets of Allah aforetime, if ye are (indeed) believers?
Surah Al-Baqara(2:91)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah: "Allah knows what every female bears, and by how much the wombs fall short (of their time or number)..." (V.13:8)
Narrated Ibn `Umar:
Allah's Messenger (ﷺ) said, "The keys of Unseen are five which none knows but Allah: None knows what will happen tomorrow but Allah; none knows what is in the wombs (a male child or a female) but Allah; none knows when it will rain but Allah; none knows at what place one will die; none knows when the Hour will be established but Allah." (See The Qur'an 31:34.")
Sahih al-Bukhari 4697