Michigan, Michigan State outdoor game pushed back to 9:40 p.m. ET

It's a beautiful day for hockey. #HOCKEYCITY http://t.co/2LI13Y6tDm pic.twitter.com/9ygeOp6W9T

— Hockey City Classic (@HkyCityClassic) February 7, 2015

For the fourth time in the modern era, Michigan and Michigan State hockey will play outdoors.

The rivals are set to play on BTN at 9:40 p.m. ET Saturday night at Soldier Field, home of the NFL's Chicago Bears. Watch the game on BTN2Go.

The game, which is the nightcap of the Hockey City Classic's doubleheader, was slated to start at 8 p.m., after the Western Michigan-Miami (OH) game, but unexpected warm weather has pushed the time back.

[ MORE: Follow @HkyCityClassic for all weather updates ]

This marks Michigan's seventh outdoor game overall, and Michigan State's fifth.

These two teams, of course, played in the "Cold War," college's hockey's first outdoor game, on Oct. 6, 2001 at Spartan Stadium.

Here's photo proof:

#TBT Spartan Stadium, Oct. 6, 2001 – college hockey's first outdoor game. pic.twitter.com/wiDOSrYTTm

— Michigan State Hockey (@MSU_Hockey) February 5, 2015

Saturday's meeting will mark the 302nd edition of the series, the most-played rivalry in college hockey history.

Yes, both teams will be wearing special alternate jerseys in Chicago.

We're days away from the @HkyCityClassic. Let's hear your best outdoor/pond hockey memories. #GoBlue pic.twitter.com/WYP7VnMOBS

— Michigan Hockey (@umichhockey) February 3, 2015

Just revealed at Munn – here are the Spartans' jerseys for @HkyCityClassic pic.twitter.com/xmSJvkVDfn

— Michigan State Hockey (@MSU_Hockey) January 24, 2015