PST stands for Pitcairn Time - Adamstown and represents UTC-08:00. Note that PST is used by 2 different zones, so the correct offset depends on the location you mean.
Ambiguous Abbreviation
"PST" has 2 different meanings depending on the region.
UTC-08:00
Current time:
--:--:--UTC-07:00
Current time:
--:--:--