"Why could plants not survive a million year "day" with equal amounts of darkness and light? Who says that there had to have been 500000 years of darkness followed by 500000 years of light?"
It's funny that this idea has to be invoked to make the long day theory real, isn't it?
The Bible makes no account for that idea, but many just add it to justify their own view.
The statement that the "evening and the day were the first day" just sums it up.
God is God. Tell me why he needs an extremely long period of time.
The Bible says He created most things by His voice, i.e., "and God said".
Peter, that designated founder of the "church" tell us how long these days of creation were and they were not one of our 24 hour days.
Now depending upon where you live on this planet a day is not split into half and half.
Why does God need six days then? Why not just create everything instantaneously all at once? Did you even read my post that deals with relativity, the big bang and how time measured from our current reference frame and time measured from God's reference frame immediately following creation would be different?