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 …

UTC is always displayed as a 24-hour clock. NIST promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that …

2 days ago · This interactive US time zones map displays all time zones across the United States and its territories. Hover over any state to see its time zone information and current UTC offset.

1 day ago · Exact time now, time zone, time difference, sunrise/sunset time and key facts for United States.

1 day ago · Check the current time in United States and time zone information, the UTC offset and daylight saving time dates in 2025.

United States spans multiple time zones with varying daylight saving time policies. Different regions within the country may observe different DST rules or maintain year-round standard time.

Current local time in the United States. Discover the United States’ time zones, daylight saving time (DST) rules, and the local time in the cities of the United States.

Looking for current time in a particular place or time zone in USA? The UTC time standard was introduced in 1960 with a commitment to remain within one second of GMT by the addition of …

Standard time within each time zone is an integral number of hours offset from a time scale called Universal Time, Coordinated (abbreviated UTC), maintained by a large number of very precise …

See, all 9 official time zones of the USA, listed by state, and 3 more time zones used in insular areas. Always up-to-date information.