Grid Point Code

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Mercado de Sonora

Mexico CityMexico

Without a code
Mercado de Sonora, Mexico City, and then directions
With a code
#GD36T-LK12C
Said aloud
Mercado de Sonora LK12C

This code is one spot in Mercado de Sonora, a cell 2.56 m by 3.23 m. Every stall front and doorway in it has a code of its own.

Get the code for your door

What the code says

The Grid Point Code for Mercado de Sonora is #GD36T-LK12C. It names a cell 2.56 m north to south and 3.23 m east to west, centred on 19°25'19.93"N, 99°07'28.81"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
Market in the historic center of Mexico City
Code
#GD36T-LK12C
With a check character
#GD36T-LK12C*6
Short form
LK12C
Cell centre
19.422202, -99.124669
Cell size
2.56 m by 3.23 m
City
Mexico City
Region
Mexico City
Country
Mexico

How to give this address

On a sign, a form or a delivery note

The whole code, #GD36T-LK12C. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Mexico City

Mercado de Sonora LK12C: 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 5.0 km east or west of Mercado de Sonora. 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

#GD36T-LK12C*6. 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 50.4 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. GD36Metropolitan area40 km by 50.4 km
  2. GD36TDistrict8 km by 10.1 km
  3. GD36TLSuburb1.6 km by 2.02 km
  4. GD36TLKA few streets320 m by 403 m
  5. GD36TLK1Building64 m by 80.6 m
  6. GD36TLK12Entrance12.8 m by 16.1 m
  7. GD36TLK12CDoorway2.56 m by 3.23 m

More in Mexico

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