Lega Serie A has today - Friday, 20 December - announced in their official press release no. 123 the dates and times of Serie A Matchday 21 through to Matchday 23.
Matchday 21 | Juventus-Milan -> Saturday, 18 January 2025, 18:00 CET
Matchday 22 | Napoli-Juventus -> Saturday, 25 January, 18:00 CET
Matchday 23 | Juventus-Empoli -> Sunday, 2 February, 12:30 CET