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Decades
A decade (from , , ) is a period of 10 years. Decades may describe any 10-year period, such as those of a person's life, or refer to specific groupings of calendar years. Usage Any period of ten years is a "decade". For example, the statement that "during his last decade, Mozart explored chromatic harmony to a degree rare at the time" refers to the last 10 years of Wolfgang Amadeus Mozart's life without regard to which calendar years are encompassed. Also, 'the first decade' of a person's life begins on the day of their birth and ends at the end of their 10th year of life when they have their 10th birthday; the second decade of life starts with their 11th year of life (during which one is typically still referred to as being "10") and ends at the end of their 20th year of life, on their 20th birthday; similarly, the third decade of life, when one is in one's twenties or 20s, starts with the 21st year of life, and so on, with subsequent decades of life similarly described by refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 Synodic day, solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar climate, subpolar regions around the planet, four ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anno Domini
The terms (AD) and before Christ (BC) are used when designating years in the Gregorian calendar, Gregorian and Julian calendar, Julian calendars. The term is Medieval Latin and means "in the year of the Lord" but is often presented using "our Lord" instead of "the Lord", taken from the full original phrase "", which translates to "in the year of our Lord Jesus Christ". The form "BC" is specific to English language, English, and equivalent abbreviations are used in other languages: the Latin (language), Latin form, rarely used in English, is (ACN) or (AC). This calendar era takes as its epoch (date reference), epoch the traditionally reckoned year of the annunciation, conception or Nativity of Jesus, birth of Jesus. Years ''AD'' are counted forward since that epoch and years ''BC'' are counted backward from the epoch. There is no year zero in this scheme; thus the year AD 1 immediately follows the year 1 BC. This dating system was devised in 525 by Dionysius Exiguus but was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Units Of Time
A unit of time is any particular time interval, used as a standard way of measuring or expressing duration. The SI base unit, base unit of time in the International System of Units (SI), and by extension most of the Western world, is the second, defined as about 9 billion oscillations of the caesium atom. The exact modern SI definition is "[The second] is defined by taking the fixed numerical value of the cesium frequency, , the unperturbed ground-state hyperfine transition frequency of the cesium 133 atom, to be when expressed in the unit Hz, which is equal to s−1." Historically, many units of time were defined by the movements of astronomical objects. * Sun-based: the year is based on the Earth's orbit, Earth's orbital period around the sun. Historical year-based units include the Olympiad (four years), the lustrum (five years), the indiction (15 years), the decade, the century, and the millennium. * Moon-based: the month is based on the Orbit of the Moon, Moon's orbital per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year
A year is a unit of time based on how long it takes the Earth to orbit the Sun. In scientific use, the tropical year (approximately 365 Synodic day, solar days, 5 hours, 48 minutes, 45 seconds) and the sidereal year (about 20 minutes longer) are more exact. The modern calendar year, as reckoned according to the Gregorian calendar, approximates the tropical year by using a system of leap years. The term 'year' is also used to indicate other periods of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phasessee lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar climate, subpolar regions around the planet, four ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millennium
A millennium () is a period of one thousand years, one hundred decades, or ten centuries, sometimes called a kiloannum (ka), or kiloyear (ky). Normally, the word is used specifically for periods of a thousand years that begin at the starting point (initial reference point) of the calendar in consideration and at later years that are whole number multiples of a thousand years after the start point. The term can also refer to an interval of time beginning on any date. Millennia sometimes have religious or theological implications (see millenarianism). The word ''millennium'' derives from the Latin ', ''thousand'', and ', year. Debate over millennium celebrations There was a public debate leading up to the celebrations of the year 2000 as to whether the beginning of that year should be understood as the beginning of the "new" millennium. Historically, there has been debate around the turn of previous decades, centuries, and millennia, but not so much for decades. The issue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Century
A century is a period of 100 years or 10 decades. Centuries are numbered ordinally in English and many other languages. The word ''century'' comes from the Latin ''centum'', meaning ''one hundred''. ''Century'' is sometimes abbreviated as c. A centennial or centenary is a hundredth anniversary, or a celebration of this, typically the remembrance of an event which took place a hundred years earlier. Start and end of centuries Although a century can mean any arbitrary period of 100 years, there are two viewpoints on the nature of standard centuries. One is based on strict construction, while the other is based on popular perception. According to the strict construction, the 1st century AD, which began with AD 1, ended with AD 100, and the 2nd century with AD 200; in this model, the ''n''-th century starts with a year that follows a year with a multiple of 100 (except the first century as it began after the year 1 BC) and ends with the next coming year with a multiple o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Decades
The list below includes links to articles with further details for each millennium, century and decade from 15,000BC to AD3000. Notes See also * Lists of years by topic * List of timelines * Chronology * See calendar and list of calendars for other groupings of years * See history, human history and periodization for different organizations of historical events * For earlier time periods beyond the Earth, see: ** Timeline of the universe ** Chronology of the universe * For earlier time periods on the Earth, see: ** Geologic time scale The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochro ... ** Timeline of the evolutionary history of life ** Timeline of prehistory ** Timelines of world history * For future time periods, see: ** Timeline of the far future, events beyond the y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouGov
YouGov plc is a international Internet-based market research and data analytics firm headquartered in the UK with operations in Europe, North America, the Middle East, and Asia-Pacific. History 2000–2010 Stephan Shakespeare and Nadhim Zahawi formed YouGov in the United Kingdom in May 2000. In 2001, they engaged BBC political analyst Peter Kellner, who became chairman and then, from 2007 to 2016, President. In its initial years, YouGov hired a number a notable commentators to write columns on its website, including future UK prime minister Boris Johnson, and presenter John Humphrys. In April 2005, YouGov became a public company listed on the Alternative Investment Market of the London Stock Exchange. In the same year, the company launched BrandIndex which tracks public opinion on consumer brands using daily polls. In 2006, YouGov began expanding outside the UK through acquisitions and acquired Dubai-based research firm Siraj for $1.2 million plus an eventual earn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2020s
The 2020s (pronounced "twenty-twenties" or "two thousand [and] twenties"; shortened to "the '20s" and also known as "The Twenties") is the current decade that began on 1 January 2020, and will end on 31 December 2029. The 2020s began with the COVID-19 pandemic. The first reports of SARS-CoV-2, the virus were published on 31 December 2019, though the Origin of SARS-CoV-2, first cases are said to have appeared nearly a month earlier. The pandemic led to COVID-19 recession, a global economic recession, 2021–2023 inflation surge, a sustained rise in global inflation for the first time since the 1970s, and 2021–2023 global supply chain crisis, a global supply chain crisis. The World Health Organization declared the virus a State of emergency, global state of emergency from March 2020 to May 2023. Several anti-government protest, demonstrations and rebellion, revolts occurred in the early 2020s, including a continuation of those in 2019–2020 Hong Kong protests, Hong Kong agai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2010s
File:2010s collage v22.png, From top left, clockwise: Anti-government protests called the Arab Spring arose in 2010–2011, and as a result, many governments were overthrown, including when Libyan dictator Muammar Gaddafi was Death of Muammar Gaddafi, killed; Crimea is Annexation of Crimea by the Russian Federation, annexed by Russia in 2014; Islamic State of Iraq and the Levant, ISIS/ISIL perpetrates terrorist attacks and captures territory in Syria and Iraq; climate change awareness and the Paris Agreement; the Event Horizon Telescope captures the first image of a black hole in 2019; ''Obergefell v. Hodges'' legalizes same-sex marriage in the United States in 2015, marking continuing progress for LGBTQ rights by country or territory, LGBTQ rights in developed countries; increasing use of digital media and Post-PC era, rise of mobile devices; the United Kingdom, UK votes to Brexit, leave the European Union, EU in 2016 on a rising tide of populism throughout the decade., 335x335px, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2000s (decade)
File:2000s decade montage3.png, From top left, clockwise: The Twin Towers of the original World Trade Center (1973–2001), World Trade Center on fire and the Statue of Liberty on the left during the September 11 attacks, terrorist attacks on September 11, 2001; the euro enters into European currency in 2002; a statue of Saddam Hussein being toppled during the Iraq War in 2003, and in 2006, Hussein would be Execution of Saddam Hussein, executed for crimes against humanity; U.S. troops heading toward an army helicopter in War in Afghanistan (2001–2021), Afghanistan during the war on terror; social media platforms on the internet Web 2.0, become widely popular; a Chinese soldier gazes at the 2008 Summer Olympics commencing in Beijing; the 2008 financial crisis, the largest financial crisis since the Great Depression; 2004 Indian Ocean earthquake and tsunami, a tsunami from the Indian Ocean earthquake kills over 230,000 in 2004, and becomes the strongest earthquake since the 1964 Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gay Nineties
The Gay Nineties is an American nostalgic term and a periodization of the history of the United States referring to the decade of the 1890s. It is known in the United Kingdom as the Naughty Nineties, and refers there to the decade of supposedly decadent art of Aubrey Beardsley, the witty plays and trial of Oscar Wilde, society scandals and the beginning of the suffragette movement. Despite the term, part of the decade was marked by an economic crisis, which greatly worsened when the Panic of 1893 set off a widespread economic depression in the United States that lasted until 1897. Etymology The term Gay Nineties began to be used in the 1920s in the United States, and it is believed to have been created by the artist Richard V. Culter, who first released a series of drawings in ''Life'' magazine titled "the Gay Nineties" and later published a book of drawings with the same name. History Novels by authors like Edith Wharton and Booth Tarkington documented the high life of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
