Well, the Hijri date 23 Muharram 1408 corresponds to the Gregorian date Wednesday, 16 September 1987. This date lies in the first month of the Hijri year 1408 AH, which is Muharram of 1408 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1408/01/23 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 16 September 1987 to its equivalent Arabic date.
The following is the conversion of the Arabic date 23 Muharram 1408 AH to its equivalent Gregorian date.
لَا جَرَمَ أَنَّمَا تَدْعُونَنِىٓ إِلَيْهِ لَيْسَ لَهُۥ دَعْوَةٌۭ فِى ٱلدُّنْيَا وَلَا فِى ٱلْءَاخِرَةِ وَأَنَّ مَرَدَّنَآ إِلَى ٱللَّهِ وَأَنَّ ٱلْمُسْرِفِينَ هُمْ أَصْحَٰبُ ٱلنَّارِ
Assuredly that whereunto ye call me hath no claim in the world or in the Hereafter, and our return will be unto Allah, and the prodigals will be owners of the Fire.
Surah Ghafir(40:43)
Sahih al-Bukhari
Fasting
Chapter: Observing Saum (fasting) daily throughout the life.
Narrated `Abdullah bin `Amr:
Allah's Messenger (ﷺ) was informed that I had taken an oath to fast daily and to pray (every night) all the night throughout my life (so Allah's Messenger (ﷺ) came to me and asked whether it was correct): I replied, "Let my parents be sacrificed for you! I said so." The Prophet (ﷺ) said, "You can not do that. So, fast for few days and give it up for few days, offer Salat (prayer) and sleep. Fast three days a month as the reward of good deeds is multiplied ten times and that will be equal to one year of fasting." The Prophet (ﷺ) said to me, "Fast one day and give up fasting for two days." I replied, "I can do better than that." The Prophet (ﷺ) said to me, "Fast one day and give up fasting for a day and that is the fasting of Prophet David and that is the best fasting." I said, "I have the power to fast better (more) than that." The Prophet (ﷺ) said, "There is no better fasting than that."
Sahih al-Bukhari 1976