To the best of my knowledge, all washing machines and dryers are front loaders. I'm not sure if they all have dryers. Laundry day isn't scheduled when using a clothes line.
Any day can be laundry day.
It's a matter of timing without a doubt. Checking the weather maps on the evening and morning news is vital. The weather segment of the news is nothing like I've ever seen before. Every station will have the UK map with various clouds to designate the type of weather in any given area. So, using the weather map clouds to determine if it's safe to do laundry goes along these lines.