weeknightsadv.

1870 J. Green Hints & Helps Teachers & Parents xii. 149 All together, scholars only, before school, after, week-nights, all the week,..he or she should be singing Divine and Moral songs.

1908 Homiletic Rev. May 366/2 Using the train and trolley, and speaking week-nights, he can supply a number of such churches.

1937 Chicago Tribune 11 Feb. 23/5 The New York Rangers, about the only hocky [sic] team that comes week nights to this port of call.

1967 Times 11 Nov. 17/1 If you're allergic to cats, why don't you get it [sc. the allergy symptom] week nights then?

1986 S. Ostler & S. Springer Winnin' Times i. 28 But it became impossible to get it all done on weekends, so the teams had to start working weeknights after their regular jobs.

2006 S. Junger Death in Belmont iii. 20 Weeknights he would sit in an armchair and watch television while reading the Bible.