A whole lot of people literally had a Saturday night bath
in a washtub --
We had the option to "wash-up" some days and not bathe. You just
washed your face and arms and maybe under the arms in the sink with a
wash cloth. Saturday night was the big bath time, because of church on
Sunday.
My grandfather (b 1906) ''washed up" most nights and then bathed on
Saturday night.