A DeviantArt Comic featured in ED?

[Dr. Krest]

E-Daily featured in their webcomics an amazingly detailed and long comic by someone on deviantart. It had Twilight on a train explaining to her daughter what Equestria was like before the sun and moon moved normally in the sky. It was about how the unicorns started magically controlling it all themselves and that over time they just kept doing it until Celestia and Luna took over the position.

Basically, it said that outside of Equestria the sun and moon move normally without needing unicorn control.

Does anyone remember who that was by or even have a link to it?

[Tiger]

Eenope, sorry.

[Skardan]

I' searched for it but it seems like I forgot to fav it.