> Over one seven-day stretch, he started within the same 10-minute window on five nights, between 9:54 and 10:04 p.m.

I wonder if this correlates with Thijs's bedtime schedule, or if the hamster really is that precise.

We feed the cat at home at the same time every day, and her internal clock definitely know when it's time less than 30' divergence. She suffers the daylight transitions immensely too because of this.