It's a huge, huge night for the Republic of Ireland.
The Girls in Green face Scotland at Hampden Park, knowing that if they win they could qualify for the World Cup.
This evening's other playoff games both kick off at 6pm.
Portugal play Iceland, and Zurich is the venue for Switzerland's game with Wales.
Therefore, Vera Pauw's side should know by kick off at 8pm if a win will be enough to qualify directly for the finals, which will be held in Australia and New Zealand.
Ireland captain Katie McCabe says there's a belief in the squad that they can qualify.
"We've got identity and how we play and we've got a structure and a style that we believe in, and that we give 100% with.
"It might not be maybe the prettiest at times, but we understand what our jobs and our roles and responsibilities within that organisation is.
"I think having that identity really gives us the confidence then to go out and embark ourselves in these sort of games."
Boss Vera Pauw wants her players to be confident.
"It's about knowing what you can and what you cannot do and, and then building in that into teamwork and then just go for it. We keep it as simple as that.
"And we know that the nation is behind us that everybody's proud of us that we're here now where we are and that whatever whatever we show tomorrow, I know that the nation will be proud of what we try to do.
"And we will see at the end of the game who won, we know where we stand, we're realistic, but we will give our own that is what we can say."
