Science - Relativity of time
Today, the scientific community has solid proof of the relativity of time, thanks to Einstein's groundbreaking theory during the early 20th century. Prior to this revelation, the understanding that time could be relative and subject to change was completely unknown. Despite our perception of time following a universal, rhythmic beat, this is not the case. According to Einstein's Special Theory of Relativity, time is indeed relative. In simpler terms, the passage of time varies depending on one's frame of reference.
Qur'an - Relativity of time
The Holy Qur'an contains numerous verses that reference various events, units of time, and relativity; with some even providing conversion formulas! Let's examine a few examples to illustrate this. It's important to note that each verse describes a distinct event, thus requiring a unique formula for measuring time relativity. Hence, when a verse includes the term "day," refrain from assuming that it signifies a mere 24 hours. Instead, it could signify an epoch, thousands of years, or even more.
وَيَسْتَعْجِلُونَكَ بِٱلْعَذَابِ وَلَن يُخْلِفَ ٱللَّهُ وَعْدَهُۥ وَإِنَّ يَوْمًا عِندَ رَبِّكَ كَأَلْفِ سَنَةٍ مِّمَّا تَعُدُّونَ
And they urge you to hasten the punishment. But Allah will never fail in His promise. And indeed, a day with your Lord is like a thousand years of those which you count. 22:47
يُدَبِّرُ ٱلْأَمْرَ مِنَ ٱلسَّمَآءِ إِلَى ٱلْأَرْضِ ثُمَّ يَعْرُجُ إِلَيْهِ فِى يَوْمٍ كَانَ مِقْدَارُهُۥٓ أَلْفَ سَنَةٍ مِّمَّا تَعُدُّونَ
He arranges [each] matter from the heaven to the earth; then it will ascend to Him in a Day, the extent of which is a thousand years of those which you count. 32:5
تَعْرُجُ ٱلْمَلَـٰٓئِكَةُ وَٱلرُّوحُ إِلَيْهِ فِى يَوْمٍ كَانَ مِقْدَارُهُۥ خَمْسِينَ أَلْفَ سَنَةٍ
The angels and the Spirit will ascend to Him during a Day the extent of which is fifty thousand years 70:4
إِنَّ رَبَّكُمُ ٱللَّهُ ٱلَّذِى خَلَقَ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضَ فِى سِتَّةِ أَيَّامٍ ثُمَّ ٱسْتَوَىٰ عَلَى ٱلْعَرْشِ يُغْشِى ٱلَّيْلَ ٱلنَّهَارَ يَطْلُبُهُۥ حَثِيثًا وَٱلشَّمْسَ وَٱلْقَمَرَ وَٱلنُّجُومَ مُسَخَّرَٰتٍۭ بِأَمْرِهِۦٓ أَلَا لَهُ ٱلْخَلْقُ وَٱلْأَمْرُ تَبَارَكَ ٱللَّهُ رَبُّ ٱلْعَـٰلَمِينَ
Indeed, your Lord is Allah , who created the heavens and earth in six days and then established Himself above the Throne. He covers the night with the day, [another night] chasing it rapidly; and [He created] the sun, the moon, and the stars, subjected by His command. Unquestionably, His is the creation and the command; blessed is Allah , Lord of the worlds 7:54