Well, the Hijri date 28 Ramadan 1399 corresponds to the Gregorian date Tuesday, 21 August 1979. This date lies in the ninth month of the Hijri year 1399 AH, which is Ramadan of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1399/09/28 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 21 August 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Ramadan 1399 AH to its equivalent Gregorian date.
إِنَّ هَٰذَا مَا كُنتُم بِهِۦ تَمْتَرُونَ
Lo! this is that whereof ye used to doubt.
Surah Ad-Dukhaan(44:50)
Sahih al-Bukhari
Obligatory Charity Tax (Zakat)
Chapter: Zakat of dates during plucking season
Narrated Abu Huraira:
Dates used to be brought to Allah's Messenger (ﷺ) immediately after being plucked. Different persons would bring their dates till a big heap collected (in front of the Prophet). Once Al-Hasan and Al-Husain were playing with these dates. One of them took a date and put it in his mouth. Allah's Messenger (ﷺ) looked at him and took it out from his mouth and said, "Don't you know that Muhammad's offspring do not eat what is given in charity?"
Sahih al-Bukhari 1485