Check exact current time and discover the key facts about Pacific Standard Time. What is PST? PST (Pacific Standard Time) is Pacific Standard Time (PST), which is used to determine the time zone and local time (PST) on the Pacific coast of the United States, Mexico, and Canada. Pacific Standard Time (PST) is UTC−8, observed along the Pacific Coast of the United States and Canada in winter. From March to November, these regions switch to Pacific Daylight Time (PDT, UTC−7). PST is 3 hours behind Eastern Time (EST). Pacific Standard Time (PST) is a standard time zone in use from the first Sunday in November to the second Sunday in March—when Daylight Saving Time (DST) is not in effect. Exact time now, time zone, time difference, sunrise/sunset time and key facts for Pacific Standard Time (PST). The Pacific Time Zone (PT) is a time zone encompassing the western United States and northwestern Mexico. Places in this zone observe standard time by subtracting eight hours from Coordinated Universal Time (UTC−08:00). View current time in the Pacific Time Zone (USA and Canada) and check clock change dates. Clocks showing time in other US time zones. Convert to any local time in the world. View current time for PST (Pacific Standard Time) time zone [Updated live]. Other countries and time zones with the same UTC listed too. In the United States and Canada, the zone is generically called Pacific Time (PT) — specifically Pacific Standard Time (PST) during winter, and Pacific Daylight Time (PDT) during daylight saving time. What Does PT Time Zone Mean? Unlike other time zone denominations, which have a fixed time, Pacific Time refers to a geographical area where the time changes twice yearly as Daylight Saving Time (DST) begins and ends.