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.
PDT vs PST . Difference between PDT and PST is simply an hour. However, in order to understand how that one hour difference happens as well as what that one hour time difference means, we should understand what each term refers to. PDT stands for Pacific Daylight Time and PST stands for Pacific Standard Time.