pstS

PSTs is an acronym that can refer to multiple concepts depending on the context. The two most commonly encountered meanings are Pacific Standard Time, a time zone used in parts of western North America, and Personal Storage Table, a file format used by Microsoft Outlook to store email and other data. In addition, PST can represent other terms in various disciplines, such as Problem-Solving Therapy in psychology, among others.

Pacific Standard Time refers to the standard time used in part of western North America, with a UTC offset of minus 8 hours. During the period when daylight saving time is observed, the same region operates on Pacific Daylight Time, with a UTC offset of minus 7 hours. The zone is associated with areas including parts of the United States (such as California, Washington, Oregon), western Canada, and parts of northern Mexico, though observance can vary by jurisdiction and year.

A Personal Storage Table is a data file used by Microsoft Outlook to store copies of messages, calendar items, contacts, and other data locally on a user’s computer. PST files typically have the .pst extension and can be used with various account types, including POP3, IMAP, and Exchange. Across Outlook versions, size limits and feature sets have evolved, with older ANSI PSTs having a 2 GB limit and newer Unicode PSTs supporting larger sizes. PSTs can become corrupted if not managed carefully, so users commonly back up, archival, and occasionally repair them to maintain data integrity.