Week-day

Boxing Day, when presents are given to the postman, the milkman, etc., is the first week-day after Christmas.

Source: tatoeba (33586)

It was as still as a church on a week-day: the pattering rain on the forest leaves was the only sound audible in its vicinage.

Source: wiktionary

Each lad had an income, now, that was simply prodigious—a dollar for every week-day in the year and half of the Sundays.

Source: wiktionary

He had to set up some sort of screen for his Sunday visits to the Manor Farm. Thus he made a habit of long walks after dark on week-days and of unpunctuality at meals.

Source: wiktionary