This is about understanding dates and times as numbers…it all comes down to milliseconds for time of day and numbers 0-6 for days of the week.
spend some time on google searching for information concerning coding and time…you should come across something that is a simple enough explanation to understand, I did.
After that you would be wanting to set up a system that filters results based on the date ( must have your database set up correctly ) and filter it by day = 1 ( I think 1 is monday, it may be 0 )
Have a play around with dates and numbers until you feel confident…there are also threads on custom calendars that could help…search the forum and read through them to get a deeper understanding of calendar functions within bubble that you create.