noun
every day of the week; all days
Refers to all seven days of the week collectively. Often used in contexts like schedules, availability, or operations that cover every weekday.
このジムは全曜日営業しています。
This gym is open every day of the week.
全曜日対応のスケジュールを組むのは大変だ。
It's tough to make a schedule that covers all days of the week.
全日 can mean 'all days' or 'the whole day', but 全曜日 is more precise about covering every weekday.
Compound of 全 (all) + 曜日 (day of the week). A straightforward modern formation.