Pacific Time (PT) · PST (UTC−8) in winter · PDT (UTC−7) during Daylight Saving Time
Microsoft (Redmond) and Amazon (Seattle) — the world's two largest cloud computing providers — both headquarter in Washington State. Azure and AWS together control over 50% of global cloud infrastructure. When these companies push updates, deploy services, or announce outages, the world follows Pacific Time.
In 2019, Washington became the first US state to pass permanent daylight saving time legislation, voting to stay on PDT (UTC-7) year-round. Like Florida's Sunshine Protection Act, this requires Congressional approval. Washington's dark winters (Seattle gets less than 8.5 hours of daylight in December) make the extra evening hour highly valued.
Boeing built its 747, 767, 777, and 787 in Everett, Washington — home to the world's largest building by volume. Starbucks was founded in Seattle's Pike Place Market in 1971 — now the world's coffee schedule runs on Starbucks releases timed to PT.