Well, the Hijri date 16 Jumada Al Oula 1242 corresponds to the Gregorian date Friday, 15 December 1826. This date lies in the fifth month of the Hijri year 1242 AH, which is Jumada Al-Awwal of 1242 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1242/05/16 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 15 December 1826 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Jumada Al Oula 1242 AH to its equivalent Gregorian date.
وَلَا يَنفَعُكُمْ نُصْحِىٓ إِنْ أَرَدتُّ أَنْ أَنصَحَ لَكُمْ إِن كَانَ ٱللَّهُ يُرِيدُ أَن يُغْوِيَكُمْ ۚ هُوَ رَبُّكُمْ وَإِلَيْهِ تُرْجَعُونَ
My counsel will not profit you if I were minded to advise you, if Allah's will is to keep you astray. He is your Lord and unto Him ye will be brought back.
Surah Hud(11:34)