Bangor City's Champions League second leg away tie against HJK Helsinki has been brought forward.
The second qualifying round tie had been originally scheduled for Wednesday 20 July but will now be played 24 hours earlier.
Another Finnish side Honka face Hacken of Sweden in a Europa League tie at HJK's ground on Thursday 21 July.
Uefa regulations state the away side must be allowed to train on the pitch, traditionally the evening before.
Neville Powell's side will face the Finnish champions in the first leg at Rhyl's Belle Vue ground on Wednesday, 13 July.