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What time is Dawn.... like im sorry if this sounds sorta stupid please help

2006-12-09 11:04:51 · 11 answers · asked by Hello 1 in Science & Mathematics Astronomy & Space

Like as in the time like 12:00 9:00

2006-12-09 11:16:01 · update #1

11 answers

4:30-5:30 am

2006-12-09 11:28:13 · answer #1 · answered by lucky77 3 · 2 1

In England legal dawn is officially half an hour before sunrise (the time when the limb of the Sun rises above the idealized horizon for your locality, even if that can't be seen).

Similarly, legal dusk is officially half an hour after sunset, the moment when the last bit of the Sun's limb goes below the local horizon.

The reason that dawn and dusk are legally defined is that they are when lights on moving vehicles (including bicycles) are either no longer needed (dawn), or must be turned on (dusk). Lights must be used by ALL vehicles at night, between dusk and dawn, and there are strict specifications for both front and rear lights --- again, including bicycles.

Since the times for both dawn and dusk vary throughout the year, both national and local newspapers in England generally carry them daily, quite prominently, on their weather pages, along with the times of sunrise and sunset. In case you think that this is overkill, there's also generally some phrase reminding people that the time of dusk is "lighting up" time, and even an additional typically British guarded statement that "lights may be turned off at dawn." No-one should be able to claim that they didn't know the times when lights were needed, or where to find that information!

In addition to the times of dawn and dusk appearing in newspapers, BBC television and radio broadcast information about them also at various times throughout the day, with a reminder about the next day's dawn, late at night. They really try to get that information out!

To someone brought up in England, the corresponding situation seems extremely lax here in the U.S.. I see people all the time driving without lights, so late after sunset that they'd undoubtably get a ticket in England. Also, very few cyclists here seem to carry their own lights, or have a rear reflector, an additional, technically specified requirement over there. (I say this sadly, as a former racing cyclist who always used approved lights and rear reflectors.) They too would be ticketed on sight in the U.K. It's all about being a responsible user of the road.

My local U.S.newspapers carry the times of sunrise and sunset, but there's no mention of dawn or dusk, nor any reminders to drivers of when lights might be needed.

I hope this helps.

Live long and prosper.

2006-12-09 11:58:36 · answer #2 · answered by Dr Spock 6 · 0 0

Dawn or 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.

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 objects to be distinguishable.

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. Prior to this time, the sky is completely dark.

Dawn should not be confused with sunrise, which is the moment when the leading edge of the sun itself appears above the horizon.

In Western folkloristic tradition it is believed that evil spirits, demons, vampires, trolls, and even Satan are obliged to disappear at dawn, for being creatures of Darkness they hate light, especially that of the sun. Pre-Christian Celts also shared this belief.

Traditionally dawn is the point at which a white thread can be distinguished from a black thread.

2006-12-09 16:43:21 · answer #3 · answered by ifureadthisur2close 2 · 0 0

Many people get dawn and sunrise confused. Dawn is when the sun is below the horizon and sunrise is when the sun is above the horizon. Dawn is before sunrise. However there are different types of dawn and the specific time depends on where you are. Here in the part of Pennsylvania where I am dawn is at approximately 4:03am and the sunrise at approximately 5:38am.

2015-07-07 21:06:04 · answer #4 · answered by ? 1 · 0 0

There is no specific time that dawn occurs. It depends on where you are in the world. In the northern hemisphere the closer you are to the north pole at this time of year, the later dawn is. If you are close enough to the north pole, dawn won't come until late January or early February - it is totally dark in parts of the Arctic now.

So there is no one answer to your question.

2006-12-09 11:21:35 · answer #5 · answered by Anonymous · 0 0

It's basically about an hour before sunrise. When you can see it getting light. On a typical summer day when the sunrise is say 5:30am in NYC it starts getting light at around 4:15am. Dawn is about 4:30am

2006-12-09 11:31:19 · answer #6 · answered by ConstElation 6 · 0 0

Technically it depends on what time of year it is, as the sun rises at different times. In Summer it is early, in winter it is late.
But it is defined by the time when the sun is rising.

2006-12-09 11:16:10 · answer #7 · answered by pinkfudge27 4 · 0 0

Dawn is when it begins to get light in the morning. This is defined in various ways scientifically, in terms of twilight. Twilight is a gradual transition which occurs both in the evening and in the morning, but we are concerned here with only the morning portion of twilight. The answer to "What time is dusk?" may be inferred similarly.

All of the times derived from the below items vary more or less with the equation of time. You need first to find the equation of time at your location to answer the question in detail. I won't attempt to cover the "equation of time" here; try a web search to get information on it, as background for the rest of this response.

1) Astronomical twilight begins when the sun is 18 degrees below the horizon. This is the earliest point at which the sky begins to brighten. Up to this point a clear night sky is dominated by light from the stars, the moon (depending on its phase and location) and spacecraft, planets, comets, and other space objects both outside the solar system (such as the galactic zone) and within it (interplanetary dust). Because all these objects begin to be less visible as the sky brightens, due to lower contrast with scattered light, this is the dawn that is of interest to astronomers.

2) Nautical twilight begins when the sun is 12 degrees below the horizon. This is when the horizon can first be clearly distinguished from a vessel at sea. This is important to nautical observation and visual determination of location in the vicinity of the ship. Several planets, and the brightest stars, continue to be bright enough to be visible for a time, and so this time of day has been historically important for maritime navigation, because coastal features are visible synchronously with a variety of astronomical features. As the sky brightens further it becomes rather difficult to distinguish anything except a few of the very brightest sky objects, and position measurements for the rest (which historically had importance in navigation) would need to be made before they faded from view.

3) Civil twilight begins when the sun is 6 degrees below the horizon. This is when (in clear weather) it first becomes practical to carry on daytime activities without artificial light. It may also be noted that the color vision receptors in our eyes require a threshold intensity in order for us to discern coloration as opposed to simply brightness. Thus for much terrestrial work (in the absence of artificial light) the perception of form from shadow, color from monochrome, and shape from obscurity, entails an important division of day and night during this interval.

4) Sunrise begins when the upper limb of the sun becomes visible over the horizon (or when, if the weather were clear, it would hypothetically become visible over the horizon.) This is when direct sunlight (again, during clear weather,) is available as daylight. A greatly increased amount of heat is transmitted to the earth by direct sun rays, as opposed to reflected and scattered sunlight. Sunrise is so defined because parts of the solar corona, prominences, flares, etc., appear before the main surface of the sun, and the moment of greatest increase of light is not easily quantifiable until afterwards. Dependence on the atmosphere of weather, cloudiness, and refraction, usually limit an observer from knowing more precisely than a range of at least five to ten seconds when the surface of the sun will first appear. Even the most accurate results of calculations for sunrise are seldom reported better than the nearest minute.

As the time of sunrise can vary through the year based on the equation of time, the time of dawn by these definitions will vary correspondingly. The time from stage 1 of dawning to stage 2, 2 to 3, and 3 to 4, are each approximately half an hour on average. The exact times vary; however they can be predicted reliably for a given day at a given elevation at a given place on the earth. For specifics, many astronomical software programs are available, with which you can input place and date, and start searching for the time when the elevation of the sun is 18, 12, 6, or zero degrees below the local horizon. Then refine your answer, by compensating for the angular size of the radius of the sun (at its annually varying distance,) to get the time for the upper limb position to be at that same angle below the horizon.

2006-12-09 13:09:05 · answer #8 · answered by 3486784401 1 · 0 0

It is early in the morning, just as the sun starts to rise.

2006-12-09 11:13:28 · answer #9 · answered by Gee Wye 6 · 0 0

When the sun comes up

2006-12-09 11:12:59 · answer #10 · answered by taffy2513 4 · 0 0

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