Talk:Dawn

message: I'm changing this language: 
*Astronomical dawn is the time at which the sun is 18 degrees below the horizon in the morning. Astronomical dawn is that point in time at which the sun starts lightening the sky. ...
*Nautical dawn is the time at which the sun is 12 degrees below the horizon in the morning.  Nautical dawn is defined as that time at which there is just enough sunlight for the horizon and some objects to be distinguishable.
*Civil dawn is the time at which the sun is 6 degrees below the horizon in the morning.  Civil dawn is defined as that time at which there is enough light for objects to be distinguishable and that outdoor activities can commence.
Each clause gives two definitions, which may be considered normally equivalent but not logically equivalent.  Either of the two following paraphrases would make more sense:
* Dawn is defined as the moment when the sun is N degrees below the horizon; at that time there is usually enough light, bla bla.
* Dawn is defined as the moment at which a specified amount of light is present; this usually occurs when the sun is N degrees below the horizon.
The first is formal and measurable, the second is subject to judgement, so I'm assuming the first definition is more correct and rewriting the passage accordingly.  —Tamfang 05:22, 7 October 2007 (UTC)
thread_title:  Conflicting definitions 

message: It would be interesting to know how many of the public are aware that none of the three dawns described here (astronomic dawn, nautical dawn and civil dawn) is the same as sunrise?  
In some countries there is also lighting-up time which in England was 30 minutes before sunrise and after sunset.  
For an example site, such as London, how would these three dawns & sun-dawn plus the evening equivalents show on a graph?? Salisbury-99 (talk) 09:16, 22 September 2008 (UTC)
replies: text: Does "lighting-up time" refer to car headlights, or streetlamps, or what? —Tamfang (talk) 02:09, 9 April 2009 (UTC)
thread_title:  When is it daylight? graph? 

message: User AviatorPontus is a variant of the permanently blocked vandal JP eriksson, whos edits we on sv:wp usually reverts on the spot. Plaese check the edits by this user.Yger (talk) 08:02, 26 May 2010 (UTC)
thread_title:  Vandal edits 

message: Shouldnt there be a "Sunrise" on the diagram. Sunset is present, why not sunrise ?  — Preceding unsigned comment added by Gizziiusa (talk • contribs) 12:12, 16 May 2012 (UTC)
thread_title:  Sunrise ? 

message: As the calendar approaches the summer/winter solstices the days/nights get shorter, which can have a potential impact on the time and duration of dawn and dusk. What does "can" and "potential" mean in this sentence? In what cases are the times and durations not affected? --88.73.131.201 (talk) 15:17, 15 February 2014 (UTC)
thread_title:  Potential impact? 

message: The file "File:Twilight subcategories.svg"  was designed for dusk.  If we are going to use it here, then it needs adapting by changing dusk to dawn.  However, in view of the above section, perhaps it needs a more drastic change?  Dbfirs 22:24, 25 December 2016 (UTC)
replies: text: Thank you for your improvements.  We are still using dawn in two different ways in the article.  We need to decide which sense to use.  Also, please note WP:ENGVAR.  Dbfirs 08:21, 14 December 2017 (UTC)
replies: text: We have: Dawn begins with the first sight of lightness in the morning, and continues until the sun breaks the horizon and Dawn ... is the time that marks the beginning of twilight (in the lead).  There is also a discrepancy between the sun breaking the horizon, and the middle of the sun reaching the horizon, but this is geometrically only a quarter of a degree, or perhaps up to three-quarters of a degree with refraction, so the three minutes is probably not significant enough to worry about, though it does give us three different meanings for civil dawn.  Dbfirs 09:10, 15 December 2017 (UTC)

text: Less than six degrees from the horizon is imprecise and confusing.  Sunrise occurs when the middle of the sun is just over five degrees below the horizon.  I don't think we've cracked it yet, but I agreee that the word dawn is used in different ways.  We need to state this clearly.  Dbfirs 17:35, 15 December 2017 (UTC)

text: Most dictionaries define dawn as the beginning of twilight, but Wiktionary regards the word as a synonym of twilight, so I'll stop arguing.  I appreciate your work in improving the article (except for your spelling change contravening WP:ENGVAR which perhaps you didn't notice).  Dbfirs 19:08, 15 December 2017 (UTC)
thread_title:  File:Twilight subcategories.svg 

message: Like hearing  this dawn 1booandahalf (talk) 16:00, 25 July 2020 (UTC)
thread_title:  Terms of use 

message: Title of films and series at least since 1996. Should be mentioned? Helium4 (talk) 11:18, 26 March 2024 (UTC)
thread_title:  "From Dusk till Dawn", and similar