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The significance of original Days of events is that they are the metaphysical stages of creation and re-creation of the universe, according to the Duality of Time Theory. This theory is based on the Single Monad Model of the Cosmos, which is a metaphysical model that explains how multiplicity is dynamically emerging from absolute Oneness, and vice versa, at every instance of time1. 

The original Days of events are derived from the Quran, where Allah described Himself as being each Day upon some task. There are six original Days of events, corresponding to the six days of creation in the Quran, and a seventh Day of rest. Each original Day of event has a different name and attribute, such as the Day of Sovereignty, the Day of Destiny, the Day of Life, etc1. 

The Duality of Time Theory suggests that these original Days of events are intertwined with the circulated days that we perceive as the flow of time, and that each hour of the circulated day is synchronized with one of the original Days of events1. This means that the original Days of events are not only the metaphysical stages of creation, but also the metaphysical influences that affect the physical world at every hour. 

If you want to learn more about the original Days of events and the Duality of Time Theory, you can read the book by Mohamed Haj Yousef, who is the main proponent of this theory1. You can also visit his website for more information and resources. 

1: DUALITY OF TIME - 4.4.10.3 Intertwined Days 

Source(s) 

1. List of International Days and Weeks | United Nations 

2. 10 of the greatest ancient and pagan holidays - Big Think 

3. Calendar — INTERNATIONAL DAYS