here does postgres take its timezone information from?

[Chris Withers <chris@xxxxxxxxxxx>]

Hi All,

Brazil recently abolished daylight savings time, resulting in updates to 
system timezone information packages.
Does postgres use these? If so, does it need a reload or restart to see 
the updated zone info?

If not, how does postgres store/obtain its timezone zone information and 
how would this be updated?

cheers,

Chris