UTC to PST/PDT Conversion Is Not Always Minus 8 Hours

UTC to Pacific Time conversion is not a fixed minus-8-hour offset: PST (UTC-8) applies only from November through March, while PDT (UTC-7) applies from March through November. Hardcoding UTC-8 causes one-hour errors during summer months. The correct approach is to use IANA time zone identifiers like 'America/Los_Angeles' and let the runtime handle DST transitions automatically.