tidszone bevidst date_trunc funktion

Du skal angive, i hvilken tidszone du vil have den vist

select
    date_trunc(
        'day',
        timestamp with time zone '2001-01-1 00:00:00+0100' at time zone '-02'
    ) as the_date;
      the_date       
---------------------
 2001-01-01 00:00:00

AT TIME ZONE