Answered by Bing 

The difference between intertwined days and regular days is that the intertwined days are based on the Duality of Time Theory, which proposes that time has two dimensions: an inner real dimension and an outer imaginary dimension. The regular days are based on the conventional understanding of time as a single dimension that flows linearly. 

According to the Duality of Time Theory, the inner dimension of time is responsible for the creation and re-creation of the physical dimensions of space, while the outer dimension of time is what we perceive as the flow of time. The theory suggests that these two dimensions of time are synchronized by dividing the day into 24 hours, and each hour corresponds to one of the original Days of events, in which Allah described Himself as being each Day upon some task1. 

The regular days, on the other hand, are simply the units of time that we use to measure the duration of events and phenomena. They are based on the rotation of the Earth around its axis, which causes the alternation of day and night. The regular days do not have any metaphysical significance or connection to the inner dimension of time. 

I hope this answer was clear and helpful. ???? 

1: DUALITY OF TIME - 4.4.10.3 Intertwined Days 

Source(s) 

1. Date Duration Calculator: Days Between Dates - timeanddate.com 

2. Excel DATEDIF function to get difference between two dates - Ablebits 

3. What is the difference between "intertwine" and "interweave"?