Today the clock, internal/external temperature, humidity, moon phase, etc. thing in the kitchen gradually got paler until by evening there was only the black outline of the moon. The housemate flipped in new batteries one at a time, but it lay inert, showing 12:00 and bare lines for all the other readings. So she clambered onto the kitchen stepladder outside in the light rain and unwound the external terminal from the nail under the rafters that it was tied onto with twine, and we laid the two plus the other terminal from my room side by side on the kitchen table. The external temperature reading on the kitchen one remained blank, while the one on mine started ticking upwards. After an hour or so, the two were showing the same number of minutes on the time reading. I checked them again half an hour ago and the kitchen one again has a graph of pressure readings, and the symbol for broadcast reception from the outside station has reappeared. Maybe the time will sync and the outside temp reading reappear tonight; then the outside thing can go back on the nail. Otherwise we have to hunt for and interpret the instructions.