Hurricane Watch: An announcement that sustained winds of 64 knots (74 mph or 119 km/hr) or higher are possible within the specified area in association with a tropical, subtropical, or post-tropical cyclone.
PSTN Definition The public switched telephone network (PSTN) is the worldwide collection of interconnected public telephone networks that was designed primarily for voice traffic. The PSTN is a circuit-switched network. That is, a dedicated circuit (also referred to as a channel) is established for the duration of a transmission, such as a telephone call.
Overview of The Time Zone. The Pacific Standard time zone (PST) is eight hours behind Coordinated Universal Time (UTC). It is a zone that encompasses part of the United States, Canada, and Mexico with participants that follow a separate time during summer months known as Pacific Daylight Time (PDT). Today weâll explore the concept of time zones like this one and how their existence affects the way we tell time.