Their Premier League home match against Bournemouth will now be played on Monday, January 19 (8pm).
The match was previously due to be played on Saturday, January 17. It will be shown live on Sky Sports.
Broadcasters appear to have been tempted by the visit of one of the surprise teams from early in the season making the trip along the coast to face the Seagulls.
Although the Cherries’ opening to the current campajgn has been widely acclaimed after they lost key men in the summer, they are only two points ahead of Albion going into this weekend and have an inferior goal difference.
Bournemouth won the first meeting this season, 2-1 at the Vitality Stadium.
The change shortens Albion’s preparation time for the trip to Fulham to four clear days between fixtures.
Their game at Craven Cottage remains listed for Saturday, January 24 (3pm).
Everton visit the Amex on Saturday, January 31 (3pm), as originally listed.
The Toffees’ preparation for that one will be a little shorter than expected.
They entertain Leeds on the preceding Monday night, another fixture change dictated by live broadcast on Sky.