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I'm just playing around with this one. A few days ago I passed through the tropic of capricorn. Are there other markers/monuments for the of  circle of latitude (equator, antarctic circle, arctic circle and tropic of cancer)?

In 1976 during a family trip through Mexico we passed a large yellow sphere with a black stripe to mark the Tropic of Cancer.  I have no image of it but it stuck with me.

In 2004 my wife and I visited Point Pelee National Park in Ontario, which the the southern most point of the mainland of Canada.  At the approximate line of 42 degrees there was a large metal 42 painted like a red and white maple leaf and contained interesting facts about the location respective to other locations in the United States.

Both were very cool to see, and would make great Waymarks.  This might be a low-activity but challenging category.

BQ

Friends of mine worked on a project in Quito Ecuador...apparently there is a great marker there on the equator.  Could I use their photos and google earth to obtain coordinates for a waymark that I could create???       

WIKI PRIME MERIDIAN
WIKI LATITUDE LINES
There are also those called Principal Meridians.

Is there a group in this one?

I've visited many arctic circle signs this holiday (even took some photos) so I would be intrested starting this group or joining one if there is even some intrest about this. It is not about the numbers just idea is intresting and needs some work to find these...

 

 

Yes, I'm sure this would be a low volume, but very interesting category!
I saw several equator markers in Ecuador.  Those Arctic Circle ones sound fascinating, too!
I would include all latitude markers, such as the 45th parallel.  I've seen several markers in Oregon.

There are five major circles of latitude, listed below from north to south:

1. Arctic Circle (66° 33′ 38″ N)
2. Tropic of Cancer (23° 26′ 22″ N)
3. Equator (0° latitude)
4. Tropic of Capricorn (23° 26′ 22″ S)
5. Antarctic Circle (66° 33′ 38″ S)
These circles of latitude (excluding the equator) mark the divisions between the five principal geographical zones.

Other significant might be parallels  15th , 30th,  45 th, 60 th, 75 th and even 90 th parallel.

How about prime median? That is not really a circle.  If there is any marker for other longitude

Should the category then be called Great Lines of Earth?

I have done a group about this. So please join, would be my humble request.

small oaks:

There are five major circles of latitude, listed below from north to south:

1. Arctic Circle (66° 33′ 38″ N)
2. Tropic of Cancer (23° 26′ 22″ N)
3. Equator (0° latitude)
4. Tropic of Capricorn (23° 26′ 22″ S)
5. Antarctic Circle (66° 33′ 38″ S)
These circles of latitude (excluding the equator) mark the divisions between the five principal geographical zones.

Other significant might be parallels  15th , 30th,  45 th, 60 th, 75 th and even 90 th parallel.

How about prime median? That is not really a circle.  If there is any marker for other longitude

Should the category then be called Great Lines of Earth?

I have done a group about this. So please join, would be my humble request.

First, it seems to me that saopaolo, who started this thread, should be allowed to form a group for this category first, if he would like to.  That is the common courtesy on Waymarking.

I think the category should include any latitude markers, as you've outlined above.

There is, however, already a category for the prime meridian:  Greenwich Meridian Markers

I don't know what other significant meridians there are, or if there are markers for any of them.  There's the International Date Line, of course, but I don't think it crosses any populated land masses.

Wouldn't most of these be accepted in the Permanent Geographic Coordinates category. 

Some atleast. I found arctic circle marker that didn't have any coordinates. Just drawn map with arctic circle in it. So thats why own category.

If someone wants to do a category, they're more than welcome. Though after this thread, I worked on the coordinates category, and I found they go pretty well there.

I read the category discription of geografical coordinates category and certainly these latitude markings fits there fine if there is visible coordinates. I have example from  cases that have coordinates and that have not. If this great circles category is done, one can put it on Earth circles cat and/or in this geografical coordinates category? But also only to  Earth Circles cat if there is now visible coordinates. 

 Or, just an idea. Can it be possible to accept also signs in geografical coordinates cat that shows for example arctic circle even there is no coordinates writen? That way there is no need to make new category.  I mean that these great earth lines have known permanent latitude coordinates.. This way it doesn't have to be a new minor category?

1. Arctic Circle (66° 33′ 39″ N)
2. Tropic of Cancer (23° 26′ 22″ N)
3. Equator (0° latitude)
4. Tropic of Capricorn (23° 26′ 22″ S)
5. Antarctic Circle (66° 33′ 38″ S)

One can also give the difference between actual location and the great line as there is requested.

What would the difference be with permanet geograpical coordinates and this? 

These locations don't necessarily have any coordinates writen on their sign that tells about the location. There can be  map or something with drawn line or just text sign saying that there is this and that for example state border.

 There also Border crossing category, but not every border grossing sign will qualify in this one. Some will make it.  Waymarker has to figure out  if this or that location is signicant latitude then find object that says something about the location or If there is no explanation prove with coordinates of gps that you were in right spot and there is some marker also.

In wikipedia there is a list of notable parallels and these circles of latitude. These would be our targets to get waymarked with or without visible coordinates on a sign or other. There has to be any  kind of sign, plaque, marker or man made object to be waymarked.  Many of these notable parallels are borders of some countries or states like in USA or Canada. Wikipedia is also helpful with finding these as there are some images of the markers of these parallels.

We need the reading of the gps as a waymark coordinates at site and difference to this great latitude. Picture of the sign, plaque  or other manmade object like statue is ofcourse necessary.

I agree on the great lines. However, most of these are in very remote areas, which is why I would include the the 45 degree latitude line (I even have a picture of that one.)

I would not include border crossings, since there is already a category for those. However,  to have some longitude lines too, I suggest including the borders of time zones - the are ideally at 7.5 deg., 22.5 deg. 37.5 deg. and so on every 15 degrees east and west, but are adjusted to country and state borders.

This definitely has potential...

Thank you for comments.

Great Circles are of course here as said before. I suppose this was originaly started with these in mind. These can be tough to find. 

Another Latitude locations are those markers that are on equal degree (like N/S 45 degrees etc.)  .Basicly those that are mentioned here .

About those border crossings. Lot of border crossings just happens to been drawn in exact degree of latitude. Some of those  border areas may have a markers that say that this border is  forexample in 49 degree, between British Columbia and Washington.

Equal degree of Longitude markers can be waymarked also, Exept Prime meridian that is waymarked already in its own category.  

Now I'm thinking that Time zones are better to leave out of this category. In most cases these are not straight lines as they follow national borders. Time zones are also mentioned in many places other than borders like in airport, harbours etc. These cases they don't have anything to do with equal longitudes or latitudes either.

Right name of the category would be Lines of Earth.

With markers that are waymarked. Give the distance to real longitude or latitude that this or that marker presents. (how far north/ south or east/ west is marker right latitude and longitude)

How about including old historical meridians : Paris meridian and even more rare antwerp meridian? There are markers of these also.

Some variable ideas.  

Line type:

Great Circles (arctic, 
Equal Latitudes
Equal Longitudes
Time zone *
Historical (Paris, Antwerp)

Marker type: Check box
Historical
Comercial (location is comercial and offers tourists other than historical data)
Artistical
Other

If other type. Please explain

 

 
 

 

Good point about the time zones! I didn't think that one through.

Thank you for voting.

Peer review went successfully in this new Great Lines of Earth category.  In 68 votes there was 5 denys and 5 abstained votes. I'd say this was pretty good result and i'm very satisfied.  

 

"---  there were  5 denies and 5 abstained votes. I'd say this was pretty good result and I'm very satisfied. " 

 I agree .  .   . . .  The best returns of  any Category I have submitted or been an Officer in. Was actually surprised there weren't more 'No' votes as it is  similar  to  'Permanent  Geographic Coordinates.

 

I'm just jumping in here.

I have also seen "45 degree Latitude - Half way between the Equator and the North Pole".

I have also seen 38 degree signs that honor veterans of the Korean War.

Best wishes  ---  Morgan

I found a very interesting map of Meridians and Baselines on the Bureau of Land Management site

http://www.glorecords.blm.gov/Visitors/PrincipleMeridiansAndBaselines.html

I'm not sure how, exactly, they tie into the Great Lines, but I thought I would post.