The Maine are proving they are the best, yet again, announcing 8123 Day—aka Fan Appreciation Day.

Read more: The Maine are back in the studio and working with ATL’s Rian Dawson

The amazing, online event is set to take place this Sunday, January 21, from 9 a.m. to 8 p.m. PST. They're promising new content every hour for 11 hours—and that's a lot of hours.

Plus, there'll be contests, charity fundraising and a “very special fly away contest.” Safe to say, we are intrigued and so excited!

Tune into the band's site the day-of to be a part of all the activities.

The details are pretty bare bones for now, but they promise that there's more info to come.

Mark your calendars, and be ready to celebrate an amazing band (with some equally amazing fans) on Sunday!

Watch more: Hitch a ride through the Maine’s epic 8123 Fest