"I don’t know whether to high-five you or frown at you for kissing your aunt about five hundred times!"
-- Scorpius Malfoy (CC1.19)
The disguised Delphi, Albus Potter and Scorpius Malfoy enter the Minister for Magic’s office. When they hear Hermione Granger outside her room, Albus tries to distract her by pretending to be her husband Ron – insisting that they either have another baby, go on a holiday or, at the very least, go for a drink in the Leaky Cauldron later (CC1.18).
This is the day after Albus and Scorpius escape from the Hogwarts Express and visit the St Oswald's Home - so during 2 September 2020.
From the Web
The theatre production opened in the West End of London at the Palace Theatre on 31 July 2016, with Esther Smith in the role of Delphi, Anthony Boyle as Scorpius Malfoy and Sam Clemmett as Albus Potter: Harry Potter and the Cursed Child, Parts One and Two