The following solutions are not working:
{{attendanceresult.basofa_logout | date:"hh:mm:ss" | plus: 19800 }}
{{attendanceresult.basofa_logout | date:" hh:mm" | date: '+05:30'}}
{{ attendanceresult.basofa_logout | in_time_zone: "IST" | date: "hh:mm" }}
Thanks!