Yes. The challenges will take place during peaks periods: mornings from 6 a.m. to 10 a.m. or evenings from 5 p.m. to 9 p.m. on especially cold days.
At the end of a challenge, why isn't the temperature on my thermostats the one I had programmed?
If a challenge is cancelled by Hilo, will I still get a reward?
What happens when a challenge is cancelled by Hilo?