"2024, by the last date I checked," he does hope that Erin doesn't do the thing that modern Changelings do and act surprised that he's from recently enough to know what the bloody moon landing is.

"And earth, yes. If you know to ask, then I presume the same."

Clears his throat.

"I'll be helping for the rest of the potluck, but if you care to make proper introductions, you can find me afterwards."

Somewhere private, but that goes without saying.