Geographic Beijing Flag

The Geographic Flag of Beijing has a field of red and indigo.  In the center is a yellow star dominant to a pink star. The background is coded to 116 Degrees East, while the stars show us 39 Degrees North. 

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Image Credit: Wikipedia
https://en.wikipedia.org/wiki/Beijing#/media/File:Hall_of_Supreme_Harmony,_Forbidden_City,_Beijing,_with_tourists_2.jpg

Geographic Rio de Janeiro Flag

The Geographic flag for Rio de Janeiro is a tribar of white, green, and yellow.  These colours are coded to zero, green, and yellow- which in turn are coded to numbers: 043.  The number 43 refers to Rio De Janeiro's Longitude at 43 Degrees West.  Likewise the two pointed orange stars refer to the number 22, since Rio's Latitude is 22 Degrees South.

The central white pentagon denotes that this is a Western line of Longitude.  Also the dominant upside down star denotes that this is a Southern Parallel.

The order of the colour to number is based upon the order of appearance in a rainbow.  Orange is 2, because it is the second colour of the rainbow.  Yellow is 3, since it is the third colour of a rainbow.  Green is 4, because it is the fourth colour of the rainbow.  Since there are only seven official colours in a rainbow, the numbers 8, 9, and 0 are coded to black, pink, and white; unless they appear in the pentagon or form the outline of the central stars of Latitude.

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 Image Credit: Wikipedia
https://upload.wikimedia.org/wikipedia/commons/9/94/Montagem_RJ.jpg

Geographic Flag for Cheyenne, Wyoming

The Geographic Flag for Cheyenne, Wyoming has a tribar of red, white, and green.  Each bar is coded to a number based upon the rainbow, which is reflective of Longitude: 104 Degrees West.  The stars in the center are coded to 41 Degrees North.  Red is the 1st colour and green is the 4th colour, while white is equal to zero.

The central white pentagon indicates a Western Line of Longitude, while the upward green star indicates a Northern Parallel.

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Image Credit:
http://www.jiffyautoglass.com/cheyenne-wyoming.html

Geographic Carson City, Nevada

The flag for 119 Degrees West by 39 Degrees north uses the colours red and pink as the field.  The field's colours are coded to numbers which reflect 119.  Also the white pentagon in the center is reflective of Western Hemisphere.  The two stars in the middle code for Latitude: 39 Degrees. 

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Image Credit: https://ndep.nv.gov/photo/carson.htm

Navassa Island Geographic Flag

The Navassa Island Geographic Flag is a tribar of white, purple, and blue.  The colors are coded to numbers based upon the rainbow.  The central star represents the Latitude of 18 Degrees North.  See the Flag Key below to make sense of the number to color symbolism.

Note this is an apolitical, scientific, objective flag that any nation can fly.  This makes these flags useful in disputed areas.

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Image Credit: Wikipedia
https://en.wikipedia.org/wiki/Navassa_Island#/media/File:NavassaCoastAerialUSGS.jpg

Geographic Flag for Juneau, Alaska

The Geographic Flag of Juneau, Alaska reveals its Longitude at 134 Degrees West.  This is indicated by the tribar of red, yellow, and green.  With these types of flags, colors are coded to numbers.  In this case 1, 3, 4, equals 134, which is the Longitude that Juneau sits on.  The central white pentagon also signals that this is in the Western Hemisphere.

The two stars tell the Latitude: 58 Degrees North.  Since the dominant star is pointing up, it is a Northern Parallel.  The code of color to number is based upon the order of the rainbow: red = 1, yellow = 3 and green = 4.

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Image Credit: Wikipedia 
https://en.wikipedia.org/wiki/Juneau,_Alaska#/media/File:Downtown_Juneau_and_Douglas_Island.jpg

Geographic Denver, Colorado Flag

The Denver, Colorado Geographic flag is a tribar of red, white, and green.  The colours of this flag are coded to numbers which show its Latitude and Longitude.  As for the Longitude: red, white, and green code for one, zero, and for- indicating Longitude of 104 Degrees West.  Also the central white pentagon indicates this is a Western line of Latitude.

The stars of this flag reveal the Latitude: 39 Degrees North.  Yellow is coded to three, while pink is coded to nine.  Thus we have 39 Degrees North.  Since the dominant star is pointing up, this indicates a Northern Parallel.
 

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 Image Credit: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0ahUKEwjsuv6vssvNAhVKVD4KHQMaC1QQjhwIBQ&url=http%3A%2F%2Fwww.keyword-suggestions.com%2FZGVudmVyIHNreWxpbmU%2F&psig=AFQjCNHHPlcaP-DzlCHvpAPKXfNUD_H5nA&ust=1467226361267792&cad=rjt