へいじつ平日heijitsuひらび平日hirabi
1.
A day of the week that is not a Sunday or a public holiday, typically considered a regular working day.
2.
A common day that falls within the standard week, excluding days designated for rest or celebration.
3.
Days that are usually associated with normal routines, activities, and business transactions, contrasting with special or festive occasions.
4.
A term often used to refer to days that are part of the weekly cycle dedicated to work and school, as opposed to leisure or commemorative events.
Example:
平日料金と休日料金で、１万円も違うんだ。