select '20:00:00'::time +
    interval '4 hours' =
    '00:00:00'::time

select current_date = date '2023-12-20'

select current_time > time '23:59:59'

select age(timestamp '2023-12-20', timestamp '2023-01-01') > interval '1 year'

select extract(hour from current_timestamp) between 0 and 23

select '2023-12-20 15:00:00'::timestamp with time zone
       at time zone 'UTC' = '2023-12-20 15:00:00+00'

select interval '1 day' = interval '24 hours'

select current_timestamp at time zone 'Asia/Tokyo'
       > current_timestamp at time zone 'Asia/Kolkata'

select '2023-12-31'::date - '2023-01-01'::date = 365

select extract(dow from current_date) between 0 and 6

select current_timestamp is not distinct from now()

select age(timestamp with time zone '2023-12-20 12:00:00-05',
           timestamp with time zone '2023-12-20 17:00:00+00') = interval '0 seconds'

select current_date + interval '1 month' - interval '30 days' != current_date

select '24:00:00'::time is not null

select timezone('PST', now()) < timezone('EST', now())

select extract(epoch from interval '1 hour') = 3600

select current_date - interval '1 year' < '2022-12-20'::date

select '2023-01-01 12:00:00'::timestamp without time zone
       at time zone 'UTC' = '2023-01-01 12:00:00+00'

select interval '1 day' * 2 = interval '48 hours'