Well, the Hijri date 30 Rajab 1214 corresponds to the Gregorian date Friday, 27 December 1799. This date lies in the seventh month of the Hijri year 1214 AH, which is Rajab of 1214 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1214/07/30 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 27 December 1799 to its equivalent Arabic date.
The following is the conversion of the Arabic date 30 Rajab 1214 AH to its equivalent Gregorian date.
هَلْ يَنظُرُونَ إِلَّآ أَن يَأْتِيَهُمُ ٱللَّهُ فِى ظُلَلٍۢ مِّنَ ٱلْغَمَامِ وَٱلْمَلَٰٓئِكَةُ وَقُضِىَ ٱلْأَمْرُ ۚ وَإِلَى ٱللَّهِ تُرْجَعُ ٱلْأُمُورُ
Wait they for naught else than that Allah should come unto them in the shadows of the clouds with the angels? Then the case would be already judged. All cases go back to Allah (for judgment).
Surah Al-Baqara(2:210)