PDT vs PST — cities and working rhythm
US West Coast summer offset (mid-March to early November), UTC-7. During PDT, the 7-h gap with UTC / London simplifies daylight-hour overlap — 9 AM PT = 5 PM London (BST).
US West Coast — home of Silicon Valley, LA entertainment, and the SaaS / VC ecosystem. Business hours 9 AM – 6 PM PT. Startup / tech culture stretches later than East Coast: it's common for calendar invites from West Coast product teams to run through 8 PM PT.
Time gap: PST is 1.0 hours behind PDT (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).