Unlike the summer transfer window, which has a more staggered transfer deadline, in Europe most leagues close on Jan. 31 -- but at different points throughout the day.
In all cases, clubs are still able to sign players as free agents after the deadline, and as long as they are not officially attached to any club when the window closes on Jan. 31.
Premier League transfer deadline
The deadline is at 11 p.m. GMT (6 p.m. ET) on Thursday, Jan. 31. The EFL, including the Championship, will also have the same deadline.
La Liga transfer deadline
The window will close as usual at 11.59 p.m. CET (6.59 p.m. ET) on Jan. 31.
Serie A transfer deadline
Bizarrely, Italian football had originally planned to run a truncated winter window from Thursday, Jan. 3 to Friday, Jan. 18 at 8 p.m. CET. It would appear sense was seen last month, however, with the deadline now restored to Jan. 31 at 8 p.m. CET (3 p.m. ET).
Bundesliga transfer deadline
German clubs have until 6 p.m. CET (1 p.m. ET) on Jan. 31. Clubs can still sell or loan players to leagues where the window is still open for the remainder of the day.
Ligue 1 transfer deadline
Ligue 1 will operate exactly the same as La Liga, with the transfer deadline at 11.59 p.m. CET (6.59 p.m. ET) on Jan. 31 and the winter window spanning January.
Selected other deadlines
Jan. 31: Australia, Belgium, Mexico, Netherlands, Scotland
Feb. 2: Portugal
Feb 22: Russia
Feb. 28: China
Mar. 3: Ukraine
The Major League Soccer transfer widow closes on May 7.