Sorry was at college. Ive explained how yaum or ayaum has various meanings such as day, age, period of time. And in the Qur'an a specific yaum has been used to refer to a 1000 years and a yaum being 50,000 years showing that a yaum doesn't always specifically mean a 24 hour day. Whenever ive been in Islamic lectures the speaker who understands arabic always specifies if 6 "yaums" are mentioned that in arabic it can mean a day or a period of time. Ive been in lectures from graduates of Medina university in saudi arabia who have said this. And as they have studied in the one of the best islamic university's in the world and know Arabic fluently they obv understand arabic. The point is it doesnt say "Day" it says yaum or plural ayaum which can mean day,age,period of time.
In response to why refer to why give an amount. Because Allah is saying he created the universe in six stages.
In response to why refer to why give an amount. Because Allah is saying he created the universe in six stages.