You can get the data from the database by the below query which will show you the first login and last logout and tell you the difference in hours min sec
select User,startdate as fromDate , enddate as toDate, TIMEDIFF(a.enddate, a.startdate) as LoginTtime from (select user, min(event_date) as startdate, max(event_date) as enddate from vicidial_user_log
where event_date >= '2020-02-07 0:00:01' and event_date <= '2020-02-07 23:59:59' group by user) a