I can look into this for you if you let me know which pet it is :)

Ah okay, sorry for the confusion - the reset is on the rollover between Saturday and Sunday, so the pet you renamed on Sunday counts for this week.

[edit] I've updated the text on that page to make this clearer :)

No, yeah, you're right actually. Thanks for hunting that down!!

I'm going to look into redoing this code completely, because the way it's calculating the start of the week right now is just... way too unreliable. It will be a bit time-consuming though, so I'll have to find the time to squeeze this in. Sorry about the inconvenience! I'll update here when I can get to it.