The position of the guilds (and their corresponding elements) on the compass is actually based on times of day. We got this from a poem back in fragment 7 or 8ish.
This is from @Mike's great post.
Weatherwatch: Light (Element: Light)
First look upon the red horizon
All awakened by my force
I am the mother and the son, the rising sun my source.
Gossmere: Air (Element: Aether)
Morning's called me many names
Gravity and untouched things
Though I am but a force unseen carried on imagined wings
Flinterforge: Fire (Element: Ore)
As fire hangs midway in the sky
Move the ground to summon me
But only fire and force will show what I can truly be.
Ebenguard: Water (Element: The Tides)
Day grows weary, night awakes
Five moons call to the water
A careful step upon the land but sea is too my daughter
Thornmouth: Darkness (Element: Thought)
Night black curtains drape the world
Memory and misery, rage and reason too
All are born inside of me, and I am born in you
Balimora: Earth (Element: The WIld)
The darkened world is stirring now
Before dawn breaks its silence
Life and death move hand in have, the minuet of violence
I'm kinda hoping we find or get advice from someone before we start creating a time travel spell on our own. But if we were to start spit-balling ideas about how to create one. I think having the guilds and elements go in reverse order would be a good start.