What's the good practice in SQL when I have to deal with a list of values in a column?

I'm new to SQL and I'd like to know how I could code the information of a many values into a single column. More precisely, suppose I have this table:

create table recurrent_events(
    id integer primary key autoincrement,
    weekday integer,
    action text
);

For some records, the weekday column will have to contain more than 1 day (ex: Monday, Friday).

Is there a good way of doing this without using a list of values?

I thought of using flags to store the information of the days in the column weekday:

• 2^0 : Monday
• 2^1 : Tuesday
• ...
• 2^6: Sunday

Adding the powers of 2 corresponding to the days and extracting the bits with the bitwise AND.

Is it a good choice? Are there alternatives or better techniques I should know?