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  #1 (permalink)  
Old 23-May-2003, 01:53 PM
skywatcher skywatcher is offline
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Default Solar Eclipse

Why would they play with the time zones for this in Canada

Wont that confuse everyone to set there clock back a day then to return it to normal.

http://www.space.com/spacewatch/annu...se_030523.html
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Old 23-May-2003, 02:20 PM
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I think you're misinterpreting the article. They're not changing the clocks anywhere; they're just saying that it's the 30th on one side of the dateline and the 31st on the other when the eclipse occurs there.

It does seem to not be written very well, though . . .
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Old 23-May-2003, 02:30 PM
skywatcher skywatcher is offline
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Default Ok then why

Why is the people up there going to see this eclipse at sunset insted of sunrise if not their clocks going to be altered??
Explain that to me, please!
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Old 23-May-2003, 02:34 PM
skywatcher skywatcher is offline
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Default Also

Text say´s: "since the Moon’s penumbral shadow falls to the east of the International Date Line, local clocks will be set to the previous day: Friday, May 30."

So this text clearly says that this "happening" (eclipse) is a reason to recalibrate the clock´s.
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Old 23-May-2003, 03:07 PM
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Default Re: Also

Quote:
Originally Posted by skywatcher
Text say´s: "since the Moon’s penumbral shadow falls to the east of the International Date Line, local clocks will be set to the previous day: Friday, May 30."

So this text clearly says that this "happening" (eclipse) is a reason to recalibrate the clock´s.
No, here is the full quote:

Quote:
However, adding to the oddities associated with this eclipse, for these "Al-Can localities," since the Moon’s penumbral shadow falls to the east of the International Date Line, local clocks will be set to the previous day: Friday, May 30. Moreover, for these particular locations the eclipse will be occurring not at sunrise, but around the time of sunset.
Do I have to explain to you the difference in the words 'set' and 'reset'? Some folks will be seeing the eclipse when their local time is May 30; some folks will see when their local time is May 31. This is because of the International Date Line. It's not that complicated! I'll admit that the article is not too clear, but the "guberment" is not going to be adjusting clocks to get this eclipse right. :roll:
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Old 23-May-2003, 03:12 PM
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Oh, I agree it's poorly written, but they're not saying the clocks will be changed. I'm in the Central Time Zone, which is off one hour from the Eastern Time Zone. So, if something were to happen at 12:00 Eastern Time, I could say "Since I'm in Central, my clock will be set to 11:00 when it occurs." I'm not saying that my clock will change when it occurs, I'm just describing what my clock will be at the time. See?

It would probably be clearer if I said "reading" or "showing" rather than "set," but it's not an improper use of the word "set."
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Old 23-May-2003, 03:26 PM
skywatcher skywatcher is offline
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Default The way I understoodd this is

On one side of this timline, in Canada, the eclipse will be seen at sunRISE and on the otherside of this timline the people there will see the eclipse at sunSET...... Now how far apart is the timeline between eachother, can one be sunrise and the other sunset...
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Old 23-May-2003, 03:37 PM
LTC8K6 LTC8K6 is offline
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We already explained this to you in the PX area.

Whenever there is a sunrise, there is a simultaneous sunset.

If the eclipse is visible to a large enough chunk of the Earth, and some are seeing it at sunset, others will see it at sunrise. Since this particular one will be visible across the date line, this will also involve different dates.

Again I must ask how changing your clock would ever affect when the eclipse occurs anyway?

Suppose you did add 16 hours to your clock? So what? The eclipse will still be when it will be. No one will care what your clock says.
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Old 23-May-2003, 03:38 PM
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Well, actually, people in Alaska will see it at sunset and people in Europe will see it at sunrise. Alaska and Europe are pretty much on opposite sides of the globe. Extreme northern Asia and Europe are

The International Date Line is at approximately the 180th Meridian, which actually runs through the Aleutian Islands of Alaska. The Date Line itself is not a straight line - it zig-zags east and west while running from the North Pole to the South Pole along political boundaries. So, although some of the Aleutian Islands are west of the 180th Meridian, they're all east of the Date Line.
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Old 23-May-2003, 03:55 PM
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Default Ok but my questioning is as follows

If the eclipse is happening at sunrise...it will be seen at sunrise for EVERYONE that can see it wherever they are in the world and regardless of the time on the clock´s.
We can all agree to that!!

But this article accually states that there is a place, in canada, where people will see the eclipse at sunset... a sunset is about 16 hours after sunrise (or 8 hours before).
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Old 23-May-2003, 03:59 PM
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Default Re: Ok but my questioning is as follows

Quote:
Originally Posted by skywatcher
If the eclipse is happening at sunrise...it will be seen at sunrise for EVERYONE that can see it wherever they are in the world and regardless of the time on the clock´s.
We can all agree to that!!
No, that's not true. When it's sunset here, it's sunrise on the other side of the globe. At the exact same moment the sun is rising where you are, it is setting somewhere else. If an eclipse occurs at that moment, you will see it at sunrise, but people at the other location will see it at sunset.

The farther north you go, the less distance west (or more distance east) you need to go to get from sunset to sunrise. And of course, that changes with the seasons, too.
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Old 23-May-2003, 04:01 PM
skywatcher skywatcher is offline
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Default Ok I think I understand now,

but still a little confusiong mind you
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