query execution time for last 24 hours in PostgreSQL

Hi Team,

Can you please let me know anyone how to get each query execution time from
last 24 hours in PostgreSQL

I tried the below query but giving the wrong information.

SELECT sa.client_addr,
sa.usename,
sa.datname,
sa.state,
sa.query,
sa.query_start,
EXTRACT (EPOCH FROM (current_timestamp sa.query_start)) AS
execution_time_seconds
FROM pg_stat_activity sa
WHERE sa.query_start >= current_timestamp interval '24 hours';

Thanks,
Nikhil,
PostgreSQL DBA,
8074430856.