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CP (27/05/2015) - Until Dawn chegando, CAPCOM 100% Digital e Cloud Gaming da Microsoft
CP (27/05/2015) - Until Dawn chegando, CAPCOM 100% Digital e Cloud Gaming da Microsoft
DATE: 2015/05/27::
2
Until Dawn - Launch Date Trailer  | PS4
Until Dawn - Launch Date Trailer | PS4
DATE: 2015/05/26::
3
'Dawn' Pt. 2 (An Ambient Mix)
DATE: 2015/01/01::
4
Dawn (Go Away) - Frankie Valli and the Four Seasons
Dawn (Go Away) - Frankie Valli and the Four Seasons
DATE: 2010/08/06::
5
'Dawn' An Ambient Mix
DATE: 2013/01/01::
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Polskie głosy Until Dawn | Tylko na PS4
Polskie głosy Until Dawn | Tylko na PS4
DATE: 2015/05/26::
7
D∆WN - Blow
D∆WN - Blow
DATE: 2014/10/29::
8
Basenji - Dawn
Basenji - Dawn
DATE: 2014/04/12::
9
Until Dawn, ESO Console, Magicka 2 [The Force Feed]
Until Dawn, ESO Console, Magicka 2 [The Force Feed]
DATE: 2015/05/26::
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Инфакт от 27.05.2015 [Игровые новости] - Cyberpunk 2077, Until Dawn, TERA...
Инфакт от 27.05.2015 [Игровые новости] - Cyberpunk 2077, Until Dawn, TERA...
DATE: 2015/05/26::
11
Tony Orlando & Dawn ~ Tie a Yellow Ribbon Round the Ole Oak Tree
Tony Orlando & Dawn ~ Tie a Yellow Ribbon Round the Ole Oak Tree
DATE: 2012/04/16::
12
As it happened: FIFA officials arrested in dawn raid
As it happened: FIFA officials arrested in dawn raid
DATE: 2015/05/27::
13
THE DAWN - SALAMAT
THE DAWN - SALAMAT
DATE: 2008/06/14::
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Breaking Dawn Audiobook    The Twilight Saga Book 4 Stephenie Meyer Part 1
Breaking Dawn Audiobook The Twilight Saga Book 4 Stephenie Meyer Part 1
DATE: 2015/04/26::
15
John Jackson Miller - Star Wars - A new dawn   1
John Jackson Miller - Star Wars - A new dawn 1
DATE: 2015/03/19::
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Until Dawn Release Date Trailer
Until Dawn Release Date Trailer
DATE: 2015/05/26::
17
Until Dawn Release Date Announced - IGN News
Until Dawn Release Date Announced - IGN News
DATE: 2015/05/26::
18
1. Dawn Pride and Prejudice Score 2005
1. Dawn Pride and Prejudice Score 2005
DATE: 2010/10/23::
19
The Oh Hellos – Like The Dawn (David K. Radio Mix)
The Oh Hellos – Like The Dawn (David K. Radio Mix)
DATE: 2013/12/17::
20
PS4 Exclusive Until Dawn Release Date Announced! Am I Excited!?
PS4 Exclusive Until Dawn Release Date Announced! Am I Excited!?
DATE: 2015/05/26::
21
RAW: Wolf Volcano erupts at dawn for first time in 30 yrs
RAW: Wolf Volcano erupts at dawn for first time in 30 yrs
DATE: 2015/05/25::
22
Tony Orlando & Dawn sing Knock Three Times
Tony Orlando & Dawn sing Knock Three Times
DATE: 2008/03/28::
23
Batman v Superman: Dawn of Justice - Official Teaser Trailer [HD]
Batman v Superman: Dawn of Justice - Official Teaser Trailer [HD]
DATE: 2015/04/17::
24
Action Movies Full Movies English ★Red Dawn ★ Hollywood Adventure Action Sci Fi New Movies
Action Movies Full Movies English ★Red Dawn ★ Hollywood Adventure Action Sci Fi New Movies
DATE: 2015/01/09::
25
League of Legends Cinematic: A New Dawn
League of Legends Cinematic: A New Dawn
DATE: 2014/07/22::
26
Batman v Superman: Dawn of Justice teaser trailer review
Batman v Superman: Dawn of Justice teaser trailer review
DATE: 2015/04/17::
27
Dawn of the Planet of the Apes | Official Trailer [HD] | 20th Century FOX
Dawn of the Planet of the Apes | Official Trailer [HD] | 20th Century FOX
DATE: 2014/05/08::
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The Dawn Wall | Kevin Jorgeson | Yosemite | adidas Outdoor
The Dawn Wall | Kevin Jorgeson | Yosemite | adidas Outdoor
DATE: 2015/05/04::
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NOTICIAS DE VIDEOJUEGOS 26/05 - Uncharted HD, RE Zero HD, Until Dawn, CD Projekt y Advent
NOTICIAS DE VIDEOJUEGOS 26/05 - Uncharted HD, RE Zero HD, Until Dawn, CD Projekt y Advent
DATE: 2015/05/26::
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NASA
NASA's Dawn Spacecraft Spots Two Bright Points on Ceres
DATE: 2015/02/26::
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Sine Kulay - Dawn Zulueta, Sheryl Cruz, Charlene Gonzales & Gary Estrada.
Sine Kulay - Dawn Zulueta, Sheryl Cruz, Charlene Gonzales & Gary Estrada.
DATE: 2014/01/08::
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Spoony, Apirl, and Brad Jones Review Twilight Breaking Dawn Part 2
Spoony, Apirl, and Brad Jones Review Twilight Breaking Dawn Part 2
DATE: 2014/10/16::
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Dawn Of The Dead (1978) Director
Dawn Of The Dead (1978) Director's Cut
DATE: 2013/07/15::
34
Halo 4 Forward Unto Dawn Full Movie
Halo 4 Forward Unto Dawn Full Movie
DATE: 2015/04/20::
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Arn Andersson - Dawn (Beautiful Orchestral)(C21FX)
Arn Andersson - Dawn (Beautiful Orchestral)(C21FX)
DATE: 2014/10/21::
36
Cormak - Dawn [Tasty Release]
Cormak - Dawn [Tasty Release]
DATE: 2014/11/24::
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Star Wars ♣ Dawn of the Jedi Into the Void ♣ Full Audiobook ♣
Star Wars ♣ Dawn of the Jedi Into the Void ♣ Full Audiobook ♣
DATE: 2014/12/21::
38
Until Dawn y NBA 2K16 ya tienen fecha de salida
Until Dawn y NBA 2K16 ya tienen fecha de salida
DATE: 2015/05/26::
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Dance
Dance 'Til Dawn (1988)
DATE: 2014/08/10::
40
D∆WN - Tide: The Paradox Effect
D∆WN - Tide: The Paradox Effect
DATE: 2015/01/15::
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Sine KULAY - Robin Padilla, Dawn Zulueta, Johnny Delgado & Mark Gil.
Sine KULAY - Robin Padilla, Dawn Zulueta, Johnny Delgado & Mark Gil.
DATE: 2013/12/24::
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Emancipator - Dusk to Dawn [full album]
Emancipator - Dusk to Dawn [full album]
DATE: 2013/06/27::
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Yona of the Dawn - 10 - Yearn (Sub)
Yona of the Dawn - 10 - Yearn (Sub)
DATE: 2015/01/06::
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#AGDQ2015 Fire Emblem: Radiant Dawn (Any%) by Gwimpage
#AGDQ2015 Fire Emblem: Radiant Dawn (Any%) by Gwimpage
DATE: 2015/01/13::
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Yona of the Dawn - 14 - Light (Sub)
Yona of the Dawn - 14 - Light (Sub)
DATE: 2015/03/03::
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Yona of the Dawn - 11 - The Dragon
Yona of the Dawn - 11 - The Dragon's Claws (Sub)
DATE: 2015/01/13::
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24 Minutes of Until Dawn Gameplay
24 Minutes of Until Dawn Gameplay
DATE: 2014/08/15::
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BATMAN VS SUPERMAN: Dawn Of Justice Trailer (2016)
BATMAN VS SUPERMAN: Dawn Of Justice Trailer (2016)
DATE: 2015/04/18::
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Dawn Ceres Images Show Mystery Lights
Dawn Ceres Images Show Mystery Lights
DATE: 2015/05/26::
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Yona of the Dawn - 12 - The Blindfolded Dragon (Sub)
Yona of the Dawn - 12 - The Blindfolded Dragon (Sub)
DATE: 2015/01/20::
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From Wikipedia, the free encyclopedia
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For other uses, see Dawn (disambiguation).
Not to be confused with sunrise.
Dawn is the beginning of morning twilight.
Dawn sky in Metz, France

Dawn (from an Old English verb dagian "to become day") is the time that marks the beginning of the twilight before sunrise. It is recognized by the presence of weak sunlight, while the Sun itself is still below the horizon. Dawn should not be confused with sunrise, which is the moment when the leading edge of the Sun itself appears above the horizon.

During dawn (and dusk) it is usually possible (provided that the sky is cloud-free) to see approximately in which direction the Sun lies, though it is below the horizon.

Types of dawn[edit]

Main article: Twilight
Early morning in Xepon, Laos (July 2004)

Different definitions exist for the start of dawn. The difference between these definitions is the amount of sunlight that must be present. This can be correlated with the angular distance of the centre of the Sun (degrees) below the horizon, in the morning:

Astronomical dawn[edit]

Astronomical dawn is defined as the moment after which the sky is no longer completely dark. This occurs when the Sun is 18 degrees below the horizon in the morning.[1] Though it is possible to localize the direction of the Sun during astronomical dawn and dusk, people in general experience astronomical dawn and dusk as night, even without clouds. The zenith is dark and more than just the brightest stars can be seen (except low above the horizon in the direction of the sun).

Nautical dawn[edit]

Beginning of nautical dawn, Joshua Tree, California, United States

Nautical dawn is the time at which there is enough sunlight for the horizon and some objects to be distinguishable; formally, when the Sun is 12 degrees below the horizon in the morning.[1]

Civil dawn[edit]

Civil dawn is the time at which there is enough light for objects to be distinguishable, so that outdoor activities can commence; formally, when the Sun is 6 degrees below the horizon in the morning.[1] At civil dawn there is no darkness in any direction, nor at the zenith. The sky is bright, even when cloudy.

Effects of latitude[edit]

The duration of the twilight period between dawn and sunrise varies greatly depending on the observer's latitude, from a little over twenty minutes in equatorial regions, to many hours in polar regions, to several weeks at the poles.

Effects of latitude (equatorial)[edit]

All phases of dawn and dusk are shortest at the equator, where the Sun at equinox rises and sets at a right angle to the horizon; the steps between civil, nautical, and astronomical dawn or dusk correspond to only 24 minutes each. At all places on the earth, dawn and dusk times are fastest around the equinoxes and slowest at the summer and winter solstices.

Effects of latitude (polar)[edit]

See also: Midnight sun

As the calendar approaches the summer or winter solstice, the days or nights, respectively, get longer, which can have a potential impact on the time and duration of dawn and dusk. This effect is more pronounced closer to the poles, where the Sun rises at the spring equinox and sets at the autumn equinox; with a long period of dawn/dusk, lasting for a few weeks.

The polar circle (at 66°30′ N or S) is defined as the lowest latitude at which the Sun does not set at the summer solstice. Therefore the angular radius of the polar circle is equal to the angle between the plane of Earth's equator and that of the ecliptic. This period of time with no sunset lengthens closer to the pole.

Near the summer solstice, latitudes higher than 54°30′ get no darker than nautical dawn/dusk; the "darkness of the night" varies greatly in these latitudes.

At latitudes higher than about 59°20, summer nights get no darker than civil dusk or dawn. This period of "bright nights" is longer at higher latitudes.

Examples[edit]

Around the summer solstice for instance, Glasgow, Scotland at 55°51′ N and Copenhagen, Denmark at 55°40′ N get a few hours of "night feeling", Oslo, Norway at 59°56′ N and Stockholm, Sweden at 59°19′ N seems very bright all the time the Sun is below the horizon. This may call for a different classification of dawn and dusk terminology for more practical use than astronomy. When the sun gets 9.0 to 9.5 degrees below the horizon (at summer solstice this is at latitudes 57°30′–57°00′), the zenith gets dark even on cloud-free nights (if there is no full moon); more than just the brightest stars are clearly visible in a large majority of the sky.

At true solar noon at London (latitude 51°30′ N), the Sun is at an angle of (90 − 51.5 =) 38.5 degrees above the horizon at the equinoxes. At winter solstice the "Sun height" (solar elevation angle) is (38.5 − 23.5 =) 15.0 degrees above horizon. At summer solstice the "Sun height" is instead (38.5 + 23.5 =) 62 degrees above horizon.

Mythology and religion[edit]

Many Indo-European mythologies have a dawn goddess, separate from the male Solar deity, her name deriving from PIE *h2ausos-, derivations of which include Greek Eos, Roman Aurora, Indian Ushas, Slavic Zornitsa and possibly a Germanic *Austrōn- (whence the term Easter). The Hindu dawn deity Aruṇa is male. In Sioux mythology, Anpao is an entity with two faces.

Prime is the fixed time of prayer of the traditional Divine Office (Canonical Hours) in Christian liturgy, said at the first hour of daylight.

In Islam, dawn (Arabic fajr) is the time of the first prayer of the day, and the beginning of the daily fast during Ramadan.

In Judaism, the question of how to calculate dawn (Hebrew Alos/Alot HaShachar, or Alos/Alot) is posed by the Talmud,[3] as it is has many ramifications for Jewish law (such as the possible start time for certain daytime commandments, like prayer). The simple reading of the Talmud is that dawn takes place 72 minutes before sunrise. Others, including the Vilna Gaon, have the understanding that the Talmud's timeframe for dawn was referring specifically to an equinox day in Mesopotamia, and is therefore teaching that dawn should be calculated daily as commencing when the sun is 16.1 degrees below the horizon. The longstanding practice among most Sephardic Jews is to follow the first opinion, while many Ashkenazi Jews follow the latter view.

Dawn in the world of Art[edit]

Literature[edit]

  • Homer used the stock epithet "rosy-fingered Dawn" frequently in The Iliad and The Odyssey.
  • An aubade (Occitan Alba, German Tagelied) is a song about lovers having to separate at daybreak.
  • Aurora Musis amica (Dawn is a friend to the Muse), in Epigrammata Disticha Poetarum Latinorum, Veterum Et Recentum, Nobiliora (1642) by Barthold Nihus[4]

See also[edit]

References[edit]

  1. ^ a b c National Oceanic and Atmospheric Administration. "Astronomical Terms". 
  2. ^ "New Dawn at La Silla". ESO Picture of the Week. European Southern Observatory. Retrieved 27 February 2015. 
  3. ^ Pesachim 94a
  4. ^ Nihus, Barthold (1642). Epigrammata disticha. Johannes Kinckius. 

External links[edit]

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