A day is the time period of a full rotation of the Earth with respect to the Sun . On average, this is 24 hours (86,400 seconds ). As a day passes at a given location it experiences morning , noon , afternoon , evening , and night . This daily cycle drives circadian rhythms in many organisms, which are vital to many life processes.
47-670: The British Asian Cup was a day/night Twenty20 cricket charity match played between the 2008 Indian Premier League (IPL) champion Rajasthan Royals and the 2008 Twenty20 Cup champion Middlesex Panthers played at the Lord's Cricket Ground , London, England. A portion of the earnings of the match went to the British Asian Trust . It ended as the Royals defeated the Panthers by 46 runs. Shaun Udal and Shane Warne were
94-524: A Proto-Germanic root *dagaz . Several definitions of this universal human concept are used according to context, need, and convenience. Besides the day of 24 hours (86,400 seconds), the word day is used for several different spans of time based on the rotation of the Earth around its axis. An important one is the solar day , the time it takes for the Sun to return to its culmination point (its highest point in
141-538: A décade – the equivalent of a week. 3 décades make a month. Various decimal time proposals which do not redefine the day: Henri de Sarrauton's proposal kept days, and subdivided hours into 100 minutes; in Mendizábal y Tamborel's proposal, the sidereal day was the basic unit, with subdivisions made upon it; and Rey-Pailhade's proposal divided the day 100 cés. The word refers to various similarly defined ideas, such as: Mainly due to tidal deceleration –
188-676: A duration of 86,400 seconds, there are these exceptional cases of a day with 86,401 seconds (in the half-century spanning 1972 through 2022, there have been a total of 27 leap seconds that have been inserted, so roughly once every other year). The term comes from the Old English term dæġ ( /dæj/ ), with its cognates such as dagur in Icelandic , Tag in German , and dag in Norwegian , Danish , Swedish and Dutch – all stemming from
235-519: A portion of the earnings of which will go to the British Asian Trust. The two teams would have played each other in the 2008 Champions League Twenty20 , but the tournament was cancelled due to security reasons. The then IPL chairman Lalit Modi said,"We have shown this year that the IPL truly has global appeal, and for one of our teams to be playing at the 'home of cricket [Lords]' in front of
282-484: A reference like "two hours into the day" meant two hours after sunset and thus times during the evening need to be shifted back one calendar day in modern reckoning. Days such as Christmas Eve , Halloween (“All Hallows’ Eve”), and the Eve of Saint Agnes are remnants of the older pattern when holidays began during the prior evening. The common convention among the ancient Romans , ancient Chinese and in modern times
329-439: A solar day , and stellar day and sidereal day (using the celestial sphere ) used for astronomy . In most countries outside of the tropics , daylight saving time is practiced, and each year there will be one 23-hour civil day and one 25-hour civil day. Due to slight variations in the rotation of the Earth, there are rare times when a leap second will get inserted at the end of a UTC day, and so while almost all days have
376-475: A strong opening partnership with South African captain Graeme Smith . By the end of the tournament they had scored 418 runs together at an average of 59.71 – the highest of the tournament. In the seven IPL matches he played, he scored 244 runs at 34.86 with a strike rate of 127.08. On his IPL debut against Kolkata Knight Riders , he scored 60 runs from 34 balls. His innings included 10 fours and one six with
423-507: Is an Indian first-class cricketer . He is a hard hitting right-handed opening batsman with a relatively short stature of around 5'5 . He played for Goa in first class cricket, and Rajasthan Royals in the Indian Premier League . He was the leading run-scorer for Goa in the 2017–18 Ranji Trophy , with 369 runs in six matches. Playing for Rajasthan Royals, he scored 311 runs at a strike rate of 133.47. He formed
470-532: Is for the civil day to begin at midnight, i.e. 00:00, and to last a full 24 hours until 24:00, i.e. 00:00 of the next day. The International Meridian Conference of 1884 resolved That the Conference expresses the hope that as soon as may be practicable the astronomical and nautical days will be arranged everywhere to begin at midnight. In ancient Egypt the day was reckoned from sunrise to sunrise. Prior to 1926, Turkey had two time systems: Turkish , counting
517-435: Is on average around 7 minutes longer than 12 hours. Daytime is further divided into morning , afternoon , and evening . Morning occurs between sunrise and noon . Afternoon occurs between noon and sunset , or between noon and the start of evening. This period of time sees human's highest body temperature , an increase of traffic collisions , and a decrease of productivity . Evening begins around 5 or 6 pm, or when
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#1732790869009564-447: Is the span of time it takes for the Earth to make one entire rotation with respect to the celestial background or a distant star (assumed to be fixed). Measuring a day as such is used in astronomy . A sidereal day is about 4 minutes less than a solar day of 24 hours (23 hours 56 minutes and 4.09 seconds), or 0.99726968 of a solar day of 24 hours. There are about 366.2422 stellar days in one mean tropical year (one stellar day more than
611-452: Is when the sun is up to 6 degrees below the horizon; nautical when it is up to 12 degrees below, and astronomical when it is up to 18 degrees below. Night is the period in which the sky is dark ; the period between dusk and dawn when no light from the sun is visible. Light pollution during night can impact human and animal life, for example by disrupting sleep. Swapnil Asnodkar Swapnil Asnodkar (born 29 March 1984),
658-469: The 2008 Mumbai attacks . However it was later decided to move the 2009 edition to South Africa due to 2009 Indian general election , but till then the Pakistani players were either terminated or suspended by their franchisees due to their unavailability. Kamran Akmal could not play for the Royals in the match because of Sri Lanka's tour of Pakistan . It was also the last competitive game Warne played at
705-544: The International Bureau of Weights and Measures (BIPM) redefined a second as "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium -133 atom ". This makes the SI-based day last exactly 794,243,384,928,000 of those periods. Various decimal or metric time proposals have been made, but do not redefine
752-578: The Jewish Sabbath begins at sundown on Friday . In astronomy , a day begins at noon so that observations throughout a single night are recorded as happening on the same day. In specific applications, the definition of a day is slightly modified, such as in the SI day (exactly 86,400 seconds ) used for computers and standards keeping , local mean time accounting of the Earth's natural fluctuation of
799-503: The Moon 's lunar phase . In common usage, a day starts at midnight , written as 00:00 or 12:00 am in 24- or 12-hour clocks , respectively. Because the time of midnight varies between locations, time zones are set up to facilitate the use of a uniform standard time . Other conventions are sometimes used, for example the Jewish religious calendar counts days from sunset to sunset, so
846-567: The Solar System or other parts of the universe , a day is a full rotation of other large astronomical objects with respect to its star. For civil purposes, a common clock time is typically defined for an entire region based on the local mean solar time at a central meridian. Such time zones began to be adopted about the middle of the 19th century when railroads with regularly occurring schedules came into use, with most major countries having adopted them by 1929. As of 2015, throughout
893-451: The 24-hour day. Two effects make daytime on average longer than night. The Sun is not a point but has an apparent size of about 32 minutes of arc . Additionally, the atmosphere refracts sunlight in such a way that some of it reaches the ground even when the Sun is below the horizon by about 34 minutes of arc. So the first light reaches the ground when the centre of the Sun is still below the horizon by about 50 minutes of arc. Thus, daytime
940-518: The IPL and Twenty20 Cup winners, and will consist of three matches in future. Udal and Warne captained the Panthers and the Royals respectively. Tyron Henderson , who had played for the Royals in the IPL, decided to play for the Panthers. Sohail Tanvir played for the Royals after getting the permission of the Pakistan Cricket Board . Tanvir was not able to play in the 2009 IPL due to tense relations between India and Pakistan after
987-536: The Lord's Cricket Ground. The Royals played a warm-up game with the Middlesex Second XI at Denis Compton Oval on 5 July 2009. Captained by Mohammad Kaif, the Royals won the toss elected to bat first. The scored 139 runs at a loss of seven wickets, and Faiz Fazal top scored with 47 runs. Batting second, the Middlesex Second XI got all out at 111 runs in the last over. Munaf Patel took three wickets, and
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#17327908690091034-454: The Moon's gravitational pull slowing down the Earth's rotation – the Earth's rotational period is slowing. Because of the way the second is defined, the mean length of a solar day is now about 86,400.002 seconds, and is increasing by about 2 milliseconds per century. Since the rotation rate of the Earth is slowing, the length of a SI second fell out of sync with a second derived from
1081-488: The Panthers made 116 runs for seven wickets, as the Royals won by 46 runs. Sohail Tanvir took three wickets for 20 runs, and Dimitri Mascarenhas was named the man of the match for his all-round performance. On 14 May 2009, it was announced that 2008 IPL champion Rajasthan Royals and 2008 Twenty20 Cup champion Middlesex Panthers will play a charity match on 6 July 2009 under the name of the British Asian Cup,
1128-404: The Royals reached to 145 runs. The next over was bowled by Berg, who gave seven runs. In the last ball of the innings, Kaif got run out on 41 runs. The Royals scored 162 runs at a loss of five wickets in 20 overs. Mascarenhas remained not out on 32 runs off 16 balls. Malan took two wickets for the Panthers giving 23 runs. The Panthers opened with Godleman and Neil Dexter . The first wicket felt in
1175-400: The Royals won by 28 runs. The match attracted a crowd of 20,000 people and was a day/night event. The match was scheduled to start at 4:21 GMT , but it started raining heavily and the play was stopped. However the rain stopped at 4:25 GMT and the toss took place. The Panthers won the toss and decided to bowl first. Fazal and Swapnil Asnodkar opened for the Royals and Gareth Berg bowled
1222-468: The Royals won by 46 runs. Tanvir took three wickets for 20 runs. Mascarenhas was named the man of the match for his "all-round effort". Key Day A collection of sequential days is organized into calendars as dates , almost always into weeks , months and years . A solar calendar organizes dates based on the Sun's annual cycle, giving consistent start dates for the four seasons from year to year. A lunar calendar organizes dates based on
1269-406: The Sun (due to both its velocity and its axial tilt). In terms of Earth's rotation, the average day length is about 360.9856°. A day lasts for more than 360° of rotation because of the Earth's revolution around the Sun. With a full year being slightly more than 360 days, the Earth's daily orbit around the Sun is slightly less than 1°, so the day is slightly less than 361° of rotation. Elsewhere in
1316-468: The air and Billy Godleman took the catch. Fazal went out making 27 runs off 22 balls, hitting two sixes. Karthik slowed down the run rate, and no boundary was hit in the next six overs. Kaif and Ashnodkar added 50 runs in 45 balls for the second wicket, but Ashnodkar got dismissed in the very next ball. Dawid Malan bowled a full toss and Ashnodkar hit it towards deep mid-wicket, however Shah took "well judged" catch. Ashnodkar made 41 runs off 40 balls. In
1363-437: The average length of a solar day on Earth has been about 86,400.002 seconds (24.000 000 6 hours). There are currently about 365.2421875 solar days in one mean tropical year . Ancient custom has a new day starting at either the rising or setting of the Sun on the local horizon (Italian reckoning, for example, being 24 hours from sunset, old style). The exact moment of, and the interval between, two sunrises or sunsets depends on
1410-469: The captains for the Panthers and the Royals respectively. The Royals played a warm-up game with the Middlesex Second XI before the match, and won it by 28 runs. The match attracted a crowd of 20,000 people, but was delayed due to rain. Winning the toss , the Panthers opted to bowl first. The Royals scored 162 runs for five wickets , and Swapnil Asnodkar and Mohammad Kaif top-scored with 41 run each. Dawid Malan took two wickets for 23 runs. In reply,
1457-545: The day's boundaries. In the Hebrew Bible , Genesis 1:5 defines a day in terms of "evening" and "morning" before recounting the creation of the Sun to illuminate it: "And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day." The Jewish day begins at either sunset or nightfall (when three second- magnitude stars appear). Medieval Europe also followed this tradition, known as Florentine reckoning: In this system,
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1504-431: The day, and use the day or sidereal day as a base unit. Metric time uses metric prefixes to keep time. It uses the day as the base unit, and smaller units being fractions of a day: a metric hour ( deci ) is 1 ⁄ 10 of a day; a metric minute ( milli ) is 1 ⁄ 1000 of a day; etc. Similarly, in decimal time, the length of a day is static to normal time. A day is also split into 10 hours, and 10 days comprise
1551-425: The first over. Murali Karthik came to the attack in the seventh over. In the first ball of the over, a shot by Ashnodkar was deflected by the wicket-keeper's helmet, and the Royals got five penalty runs. In the same over, Fazal and Asnodkar reached to a 50 runs partnership in 38 balls. However Karthik took the wicket of Fazal in the fifth ball. Fazal tried to hit play the ball towards extra cover, but it went high in
1598-400: The fourth over; Tanvir bowled Godleman, who went on four runs. Mascarenhas took the important wicket of Owais Shah in the next over, as Shah went for one run. In the first ball of the seventh over, Ojha dropped Dexter, however Mascarenhas bowled him on 26 runs on the third ball of the same over. Mascarenhas took two wickets for 24 runs in his four over spell. Malan and Morgan scored 45 runs for
1645-489: The fourth wicket partnership, before Ojha caught Morgan on Tanvir. Morgan went out making 15 runs on 19 balls. Henderson got out in the same over, getting caught by Mascarenhas; he went out scoring one run. Ojha stumped Malan on Warne in the next over, and he went for 34 runs. The Panthers required 79 runs in the last four overs. Berg, who scored 26 runs, went out in the last over as Fazal caught him on Abhishek Raut . The Panthers could only manage to 116 runs for even wickets, and
1692-409: The geographical position ( longitude and latitude, as well as altitude), and the time of year (as indicated by ancient hemispherical sundials ). A more constant day can be defined by the Sun passing through the local meridian , which happens at local noon (upper culmination ) or midnight (lower culmination). The exact moment is dependent on the geographical longitude, and to a lesser extent on
1739-502: The hours from sunset, and French , counting the hours from midnight. Humans have divided the day in rough periods, which can have cultural implications, and other effects on humans' biological processes. The parts of the day do not have set times; they can vary by lifestyle or hours of daylight in a given place. Daytime is the part of the day during which sunlight directly reaches the ground, assuming that there are no obstacles. The length of daytime averages slightly more than half of
1786-506: The next over , Eoin Morgan dropped Naman Ojha on Shaun Udal . However Ojha got caught by Steven Finn on the next ball. Ojha made 10 run off 5 balls. In the next over, Malan bowled Justin Langer , who scored one run in two balls. The next over, bowled by Henderson, came out to be the most expensive over of the innings; 15 runs were scored in the over. Mascarenhas hit a four and a six, and
1833-559: The number of solar days). Besides a stellar day on Earth , other bodies in the Solar System have day times, the durations of these being: In the International System of Units (SI), a day not an official unit, but is accepted for use with SI . A day, with symbol d, is defined using SI units as 86,400 seconds; the second is the base unit of time in SI units . In 1967–68, during the 13th CGPM (Resolution 1),
1880-524: The placement of leap seconds. Leap seconds are announced in advance by the International Earth Rotation and Reference Systems Service (IERS) , which measures the Earth's rotation and determines whether a leap second is necessary. Discovered by paleontologist John W. Wells , the day lengths of geological periods have been estimated by measuring sedimentation rings in coral fossils , due to some biological systems being affected by
1927-409: The rotational period. This arose the need for leap seconds , which insert extra seconds into Coordinated Universal Time (UTC) . Although typically 86,400 SI seconds in duration, a civil day can be either 86,401 or 86,399 SI seconds long on such a day. Other than the two-millisecond variation from tidal deceleration, other factors minutely affect the day's length , which creates an irregularity in
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1974-506: The sky). Due to an orbit's eccentricity, the Sun resides in one of the orbit's foci instead of the middle. Consequently, due to Kepler's second law , the planet travels at different speeds at various positions in its orbit, and thus a solar day is not the same length of time throughout the orbital year. Because the Earth moves along an eccentric orbit around the Sun while the Earth spins on an inclined axis, this period can be up to 7.9 seconds more than (or less than) 24 hours. In recent decades,
2021-418: The sun sets, and ends when one goes to bed. Twilight is the period before sunrise and after sunset in which there is natural light but no direct sunlight. The morning twilight begins at dawn and ends at sunrise, while the evening twilight begins at sunset and ends at dusk . Both periods of twilight can be divided into civil twilight , nautical twilight , and astronomical twilight . Civil twilight
2068-431: The tide. The length of a day at the Earth's formation is estimated at 6 hours. Arbab I. Arbab plotted day lengths over time and found a curved line. Arbab attributed this to the change of water volume present affecting Earth's rotation. For most diurnal animals, the day naturally begins at dawn and ends at sunset. Humans, with their cultural norms and scientific knowledge, have employed several different conceptions of
2115-401: The time of the year. The length of such a day is nearly constant (24 hours ± 30 seconds). This is the time as indicated by modern sundials. A further improvement defines a fictitious mean Sun that moves with constant speed along the celestial equator ; the speed is the same as the average speed of the real Sun, but this removes the variation over a year as the Earth moves along its orbit around
2162-463: The wonderfully passionate British fans is very exciting." He also welcomed the association with the British Asian Trust. Marlyebone Cricket Club (MCC) chief executive Keith Bradshaw said,"It is a great honour to be hosting the first year of this competition, and demonstrates the MCC commitment to globalising our brand and venue." It was planned that the British Asian Cup will be an annual series played between
2209-545: The world, 40 such zones are now in use: the central zone, from which all others are defined as offsets, is known as UTC+00 , which uses Coordinated Universal Time (UTC) . The most common convention starts the civil day at midnight : this is near the time of the lower culmination of the Sun on the central meridian of the time zone. Such a day may be called a calendar day . A day is commonly divided into 24 hours, with each hour being made up of 60 minutes, and each minute composed of 60 seconds. A sidereal day or stellar day
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