A Different Way to Look at the Morning and Afternoon of the First Resurrection

I believe the "days" of creation are better understood as "(radically differing in length) periods of time" - and that any one of the days, for example, could have been millions of years in length.

With that background, the morning and afternoon of the first resurrection might last millions of years - or even stretch into the (plural) eternities.

We have SUCH a limited grasp of time that I'm am certain these terms are symbolic and nearly unknowable for now.