Bad news, Pointless fans! There's a megadose of sports coming up on the BBC this summer, what with the Euros, Wimbledon, the Olympics... As a result, there's no Pointless Celebrities for at least the next two Saturdays (the schedules beyond then haven't been announced yet). The weekday show is on repeats this week and next, and I suspect after then too. It's also cancelled on the days there's football on the Beeb, and I assume will be off for the whole of Wimbledon, as normal.
If (like me) you absolutely can't manage without your daily dose of Pointlessness, don't panic. You can still catch up on classic episodes on ChallengeTV (Freeview 46, Sky 145, Freesat 146, Virgin 139). It's currently on at 7 and 8pm on weeknights, and various odd hours of the early morning.