April 30th. A date that will likely now mean a lot more to Chelsea supporters given Thomas Tuchel's side will be set to travel up to Goodison Park.
Trips to the blue half of Merseyside haven't proved particularly fruitful for Chelsea in recent years, with a 3-0 win over Everton in April 2017 the last time the Blues took all three points from a league clash at Goodison Park.
Tuchel has developed a habit of breaking hoodoos since joining the club last year, and his bid to break another on April 30th could see him in the opposite dugout to the man he replaced at Stamford Bridge.
Frank Lampard has reportedly been offered the Everton job and, should he decide to take the role, he could be in charge for the Toffees' next game against Brentford in the FA Cup.
But for all the narrative that will undoubtedly surround that game in April, Lampard could help his beloved club by stealing points from the Blues' rivals.
Everton face six of Chelsea's nearest challengers in the league before the end of the season.
Not only is this important in the race for Champions League qualification but even the very slim hope of a title race. Tuchel is aiming to secure the Blues' best league finish in five years and the man he replaced could help his cause.
Let's run through the key games where Chelsea fans will be hoping Lampard can spring a surprise.
Everton vs Manchester City - 26th February
The likelihood is that Chelsea are now out of the title picture for another year but given Man City's recent draw with Southampton, there may just be slim hopes their incredible form might hit a stumbling block.
Lampard did beat Pep Guardiola in June 2020 after Project Restart in what turned out to be a vital win for Chelsea's season.
He suffered defeat to Guardiola in both of his other two league meetings with Man City during his time as Chelsea boss, but a resurgent Everton at Goodison could make for a tricky opponent.
Tottenham vs Everton - 7th March
For all of Tottenham's apparent improvements under Antonio Conte, the frustration over no new signings in January and rumours of a potential fallout with the Italian sound all too familiar to Chelsea fans.
One of Lampard's most memorable away days as Chelsea boss was his side's 2-0 win at Spurs' new stadium in December 2019.
Everton did win at the same ground under Carlo Ancelotti last season and another north London triumph for the Toffees would be a huge blow to Conte's top-four hopes.
West Ham vs Everton - 2nd April
West Ham are another side who look set to compete for a Champions League place.
Lampard will be aiming to write some wrongs against West Ham having ended up on the losing side in both league fixtures against the Hammers in 2019/20.

Everton vs Manchester United - 9th April
With no Ole Gunnar Solskjær at the helm, Lampard has a good chance of notching his first Premier League win against Manchester United.
Given the talent in Ralf Ragnick's squad, United have all the quality needed to secure a Champions League spot but they've yet to radically improve since the German's arrival.
Liverpool vs Everton - 23rd April
A week before Lampard will be preparing to face Chelsea should he take the Everton job, he'll experience his first Merseyside derby at Anfield.
Lampard had an infamous touchline spat with Jurgen Klopp in July 2020 which probably gained him favour with Everton fans.
Given the hope of Chelsea finishing above Liverpool in the league for the first time since 2017, Frank leading Everton to their second consecutive win at Anfield would be glorious.
Arsenal vs Everton - 22d May
The final day of the season will hopefully be one where any drama in the league has been settled with Everton safe from relegation and Chelsea comfortably in the top four.
The Emirates Stadium is another ground where Lampard enjoyed one of his great wins as Chelsea boss and Everton did win there last season.
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