different answers depending on the time

Hi Now my configuration responses to NAS with Mikrotik-Rate-Limit regardless of the time and get data from database. I'd like to speed up speed depending on time and when client will connect between 23 and 11 I'd like to multiply his speed. I can create another column for night speeds in database. In freeradius configuration i can create another section, similar to present, which will get data from night speeds is there any solution to configure freeradius to different answer depending on time? something like this, depending on condition? if ( time between 11 and 23){ normal_speeds } else { night_speeds } -- Pozdrawiam Marcin / nicraM