I don't stay out late on weekdays.
On weekdays, the marmosets steered clear of the roar of traffic, and on Sundays they shunned the clamor of visiting crowds.
Certainly you’d want to adjust the sizes of your weekends to reflect their relative importance in relation to your weekdays.
But step inside their house after 4 p.m. most weekdays and you'll want to cover your ears because of the noise -- the screaming, to be exact.
We always dine in on weekdays.
The library is open on weekdays only.