Grid Point Code

Play

Sugarloaf Mountain

near LemeRio de JaneiroBrazil

With a code
#9GFJN-76D74
Said aloud
Sugarloaf Mountain 76D74

Open in the playground

What the code says

The Grid Point Code for Sugarloaf Mountain is #9GFJN-76D74. It names a cell 2.56 m north to south and 3.15 m east to west, centred on 22°56'57.99"S, 43°09'24.01"W, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is
Peak situated in Rio de Janeiro, Brazil
Code
#9GFJN-76D74
With a check character
#9GFJN-76D74*K
Short form
76D74
Cell centre
-22.949441, -43.156669
Cell size
2.56 m by 3.15 m
Region
Rio de Janeiro
Country
Brazil

How to give this address

On a sign, a form or a delivery note

The whole code, #9GFJN-76D74. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Rio de Janeiro

Sugarloaf Mountain 76D74: a name both people know, then the last five characters. They give back the exact code for anywhere within 4.0 km north or south and 4.9 km east or west of Sugarloaf Mountain. Further away the same five name somewhere else, which is why the whole code is what goes on a sign.

Copied by hand, or read over a phone

#9GFJN-76D74*K. The character on the end catches any single mistyped symbol and any two neighbours swapped.

As a link or a square code

Open it on the map, move to the exact door, and add directions if the code needs help: "blue gate, second floor". The link and the square code carry them. Nothing is kept on this site.

From the city to the door

The first four characters name a cell about 40 km by 49.2 km here. Each one after that picks one of 25 inside the last, so the whole ten name a spot about the size of a doorway.

  1. 9GFJMetropolitan area40 km by 49.2 km
  2. 9GFJNDistrict8 km by 9.84 km
  3. 9GFJN7Suburb1.6 km by 1.97 km
  4. 9GFJN76A few streets320 m by 394 m
  5. 9GFJN76DBuilding64 m by 78.7 m
  6. 9GFJN76D7Entrance12.8 m by 15.7 m
  7. 9GFJN76D74Doorway2.56 m by 3.15 m

More in Brazil

Place and region from Wikidata, described on Wikipedia; nearby town from GeoNames, under CC BY 4.0.