UTC to PST Converter

Here UTC means Coordinated Universal Time, which never changes; PST means Pacific Time, PST (UTC−8) in its winter and PDT (UTC−7) in its summer, as kept in Los Angeles. So PST is 8 h behind UTC in January and 7 h behind in July. Two 9-to-5 working days overlap by nothing in January and 1 h in July.

Developers and operations teams on the US West Coast spend much of their day reading UTC: cloud dashboards, CI logs, incident timelines and status pages often default to it. Converting UTC to Pacific Time tells you whether an alert fired during the night in Seattle or during the afternoon standup, and when a maintenance window given in UTC will start for users in California.

Pacific Time is eight hours behind UTC in winter (PST) and seven hours behind in summer (PDT). The awkward consequence is that midnight UTC, when many systems roll over to a new date, is 4:00 pm or 5:00 pm the previous afternoon in Los Angeles, so daily reports and quotas “reset” in the middle of a West Coast working day. When you plan a recurring job in UTC, check how it falls on a Pacific clock both before and after the March and November changes.

Rule of thumb: Subtract seven hours from UTC in summer and eight in winter: 00:00 UTC is 5:00 pm PDT or 4:00 pm PST the day before.