Brother, this place... [He takes a breath, shaking his head.] I know they claim it to be a facility at the bottom of an Earth ocean, but there are those gathered here from other universes, parallel to our own. They don't follow the same rules. There are similarities, from what I've gathered, but no absolutes. [He smiles, and it's a smile Thor probably hasn't seen on his face in decades: happiness at the simple joy and discovering new things.]

A month, give or take a few days.