By the Dawn's Early Light ?

Hello,
I've been tryin to get the By the Dawn's Early Light achievement recently.
According to its description we have to Survive a night on the Eidolon Plains;
That's exactly what I did until the sun woke up, but do not get it. Does someone know a way to get it ? Should I stay before it's night and exit after the sun woke up ? Because I'm pretty sure night is long..

Hi,

I hope these 2 guides help you: https://www.trueachievements.com/a244171/by-the-dawns-early-...