Two hundred and sixty three days from the start of the Championship campaign, four days from the end of it, but Tuesday could be the defining day in the race for the Premier League.
Coventry City may sealed the title to end a 25-year stay in the EFL, but it is two teams who competed in the top-flight last season who come head-to-head to decide which one might return there at the first time of asking via automatic promotion.
Depending on the outcome of this showdown at least one, if not both, of Southampton and Ipswich will have to recalculate their route back to the top table of English football via the play-offs.
With Millwall and Middlesbrough still firmly in the race, all eyes will be on St Mary's to discover just what is at stake going into the season finale on Saturday.
After seeing a late lead in their FA Cup semi-final against Man City wiped out in the closing stages at Wembley on Saturday, Saints will turn their attention back to the fight for automatic promotion.
Tonda Eckert's side are fifth, four points behind Ipswich, who lie ahead of third-placed Millwall on goal difference, with Middlesbrough a point back in fourth.
Saints are unbeaten in 17 league games but must win on Tuesday to keep their hopes of a second-placed finish alive.
Following Saturday's goalless draw at West Bromwich Albion, a win for Ipswich would all but secure promotion, no matter what happens on the final day, given their huge goal difference (+30) advantage over Millwall (+13).
"You encourage the players to stay away from the external noise and just focus on the opponent [but] they are human beings, it's impossible to block everything out," said Ipswich boss Kieran McKenna.
"They are all super motivated to be successful. This is what you want at this stage of the season, you want to be competing for your goals.
"Of course, the dream scenario would be to get over the line at St Mary's, but the energy and thoughts need to go towards performance and what it's going to take.
"They are a very good side, excellent players and excellently coached and with big confidence and momentum, that makes them a big challenge for us."
Town have won 33 points from 22 games on the road this season, giving them the seventh best away record in the division, but 14 fewer than they have earned at Portman Road.
Saints are much better at home than on the road, losing just three of their 22 games, and only one of 16 under Eckert, to Hull City on 17 January.
A draw would mean Saints drop out of the race at the penultimate hurdle and make it a three-team fight for the second automatic spot on the final afternoon on Saturday, but with Ipswich remaining in the box seat ahead of QPR's visit to Portman Road.
Eckert told BBC Radio Solent: "It's a big, big test test of maturity for us on Tuesday, because we need to be ready again."
But it is not just Saints and Town fans who have a vested interest.
Middlesbrough boss Kim Hellberg told BBC Radio Tees on Saturday that he will be watching.
"I love football," he said. "I watch every game that it's possible to watch when there's a chance. Is it Champions League at the same time? Well maybe I'll have a double screen. That is my favourite, when you can watch a lot of games at the same time.
"We'll see what happens. It's not down to us, but we've done what we could and I'm very happy with that."