https://www.polygon.com/2018/12/12/18138211/super-smash-bros-ultimate-event-spirits-date

Nintendo announced the first in-game, limited-time event for Super Smash Bros. Ultimate, which will kick off later this week. It’s clutch for spirit collectors, because this event will make a ton of quality spirits more readily available. And it’s especially good for those of us with subpar vision, because this event doubles as a celebration of glasses.

Legend- and ace-tier spirits of bespectacled characters will appear during specific timeframes, Nintendo said. Over the course of the three-day event, which kicks off on Dec. 14 at 1 a.m. ET and runs until Dec. 17 at 1 a.m. ET, it will be easier to run into characters like EarthBound’s Jeff and Animal Crossing’s Brewster.