We have an inconsistency in DB schema, server, and frontend as to how 24-hour specification should be done.

For instance, table "media" has the following specification for field "period":

period varchar(100) DEFAULT '1-7,00:00-23:59' NOT NULL

At the same time, table "config" specifies the following for "work_period":

work_period varchar(100) DEFAULT '1-5,00:00-24:00' NOT NULL

The default values for periods as offered by the frontend are "1-7,00:00-23:59".

We think that 00:00-24:00 everywhere would be more correct and more intuitive.