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  1. The National Institute of Standards and Technology - Time and Frequency Division maintains the standard for frequency and time interval for the United States, provides official time to the United States, and carries out a broad program of research and service activities in time and frequency metrology.

  2. United States time now. USA time zones and time zone map with current time in each state.

  3. 1 dzień temu · Exact time now, time zone, time difference, sunrise/sunset time and key facts for United States.

  4. Time zones in the USA are defined in the U.S. Code, Title 15, Chapter 6, Subchapter IX - Standard Time. The time zones in the law are defined by their offset from Coordinated Universal Time (UTC). There are 9 official time zones according to the law.

  5. In the United States, time is divided into nine standard time zones covering the states, territories and other US possessions, with most of the country observing daylight saving time (DST) for approximately the spring, summer, and fall months.

  6. USA Time Clock & Map - check current local time in the USA - timezones, time difference, offset to GMT/UTC, summer/winter time conversion dates, actual official time in the US, United Satets free clocks.

  7. Know what time it is across US. This simple, time zone map helps keep you know the local time for friends, colleagues, or clients, effortlessly.

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