Rotated at 9:30 to X and the temperature on the digital oven thermometer went back to 100 degrees Fahrenheit suspiciously quickly. The other two read 98/99 degrees, so I'll check again later. Temperature is fine now.
Thankfully I'm getting the other incubator today and it should be ready (heat/humidity) by Wednesday (if for some reason not Tuesday).
Rotation ended on X.