Well, the Hijri date 28 Rajab 1403 corresponds to the Gregorian date Wednesday, 11 May 1983. This date lies in the seventh month of the Hijri year 1403 AH, which is Rajab of 1403 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1403/07/28 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 11 May 1983 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Rajab 1403 AH to its equivalent Gregorian date.
وَكَذَٰلِكَ زَيَّنَ لِكَثِيرٍۢ مِّنَ ٱلْمُشْرِكِينَ قَتْلَ أَوْلَٰدِهِمْ شُرَكَآؤُهُمْ لِيُرْدُوهُمْ وَلِيَلْبِسُوا۟ عَلَيْهِمْ دِينَهُمْ ۖ وَلَوْ شَآءَ ٱللَّهُ مَا فَعَلُوهُ ۖ فَذَرْهُمْ وَمَا يَفْتَرُونَ
Thus have their (so-called) partners (of Allah) made the killing of their children to seem fair unto many of the idolaters, that they may ruin them and make their faith obscure for them. Had Allah willed (it otherwise), they had not done so. So leave them alone with their devices.
Surah Al-An'aam(6:137)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: The Adhan after Al-Fajr (dawn)
Narrated `Abdullah bin `Umar:
Allah's Messenger (ﷺ) said, "Bilal pronounces the Adhan at night, so keep on eating and drinking (Suhur) till Ibn Um Maktum pronounces the Adhan."
Sahih al-Bukhari 620