What is an appropriate data type to store a timezone?

Question

I\'m thinking of simply using a string in the format \"+hh:mm\" (or \"-hh:mm\"). Is this both necessary and sufficient?

Note: I don\'t need to store the date or the time

Answer 1

maybe interval

postgres=# select interval '01:30';
 interval 
----------
 01:30:00
(1 row)

postgres=# select interval '-01:30';
 interval  
-----------
 -01:30:00
(1 row)