Postgrsql dates days

dates.sql

WITH compr_as AS (
    SELECT s as created
    FROM generate_series( -- this would produce timestamps with 20 minutes step
             (now() - '20 days'::interval)::date,
             (now() + '20 days'::interval)::date,
             '20 minutes'::interval) AS s
)
SELECT to_char( created, 'DY'::TEXT), created, 
date_trunc('week', CURRENT_DATE - interval '1 week') as start_dt,
date_trunc('week', CURRENT_DATE) as end_dt
FROM compr_as
WHERE TRUE
    AND created >= date_trunc('week', CURRENT_DATE - interval '1 week')
    AND created <  date_trunc('week', CURRENT_DATE)