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...

of the United States observes daylight saving time, the practice of setting the clock forward by one hour when there is longer daylight during the day...

The history of standard time in the United States began November 18, 1883, when United States and Canadian railroads instituted standard time in time...

In this list of presidents of the United States by age, the first table charts the age of each president of the United States at the time of presidential...

("fall back"). The Uniform Time Act of 1966 formalized the specification of time zones and the dates of DST observation in the United States. Prior to this...

Date and time notation in the United States differs from that used in nearly all other countries. It is inherited from one historical branch of conventions...

The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States)...

The term "United States," when used in the geographical sense, refers to the contiguous United States (sometimes referred to as the Lower 48, including...

The history of the lands that became the United States began with the arrival of the first people in the Americas around 15,000 BC. Numerous indigenous...

The United States of America (USA or U.S.A.), commonly known as the United States (US or U.S.) or America, is a country primarily located in North America...

presidents of the United States by time in office. The listed number of days is calculated as the difference between dates, which counts the number of calendar...

The president of the United States is the head of state and head of government of the United States, indirectly elected to a four-year term via the Electoral...

The Third Amendment (Amendment III) to the United States Constitution places restrictions on the quartering of soldiers in private homes without the owner's...

In the United States, education is provided in public and private schools and by individuals through homeschooling. State governments set overall educational...

In the United States, freedom of speech and expression is strongly protected from government restrictions by the First Amendment to the U.S. Constitution...

Religion in the United States is widespread and diverse, with the country being far more religious than other wealthy Western nations. An overwhelming...

In the United States, human rights comprise a series of rights which are legally protected by the Constitution of the United States (particularly the...

The United Kingdom uses Greenwich Mean Time (also known as Western European Time or UTC) and British Summer Time (UTC+01:00) (also known as Western European...

The United States has a racially and ethnically diverse population. At the federal level, race and ethnicity have been categorized separately. The most...

In the United States, a common definition of terrorism is the systematic or threatened use of violence in order to create a general climate of fear to...

passed in most Northern states and a movement developed to abolish slavery. The role of slavery under the United States Constitution (1789) was the most...

In the context of the United States, secession primarily refers to the voluntary withdrawal of one or more states from the Union that constitutes the...

The Northeastern United States, also referred to as the Northeast, the East Coast, or the American Northeast, is a geographic region of the United States...

recorded in the United States since its founding and has fluctuated significantly over time. Most available data underestimate crime before the 1930s (due...

The chief justice of the United States is the chief judge of the Supreme Court of the United States and is the highest-ranking officer of the U.S. federal...

In the United States, libertarianism is a political philosophy promoting individual liberty. According to common meanings of conservatism and liberalism...

The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, and...

Christianity is the most prevalent religion in the United States. Estimates from 2021 suggest that of the entire U.S. population (332 million) about 63%...

The United States does not have an official language at the federal level, but the most commonly used language is English (specifically, American English)...

Obesity is common in the United States and is a major health issue associated with numerous diseases, specifically an increased risk of certain types of...