Joya de Cerén

What the code says

The Grid Point Code for Joya de Cerén is #GLF8H-1NJXN. It names a cell 2.56 m north to south and 3.32 m east to west, centred on 13°49'38.97"N, 89°21'22.21"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

Archaeological site in La Libertad Department, El Salvador

Code

#GLF8H-1NJXN

With a check character

#GLF8H-1NJXN*7

Short form

1NJXN

Cell centre

13.827491, -89.356170

Cell size

2.56 m by 3.32 m

Region

La Libertad Department

Country

El Salvador

How to give this address

On a sign, a form or a delivery note

The whole code, #GLF8H-1NJXN. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in La Libertad Department

Joya de Cerén 1NJXN: 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 5.2 km east or west of Joya de Cerén. 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

#GLF8H-1NJXN*7. 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 51.9 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. 8GLF8Metropolitan area40 km by 51.9 km
2. HGLF8HDistrict8 km by 10.4 km
3. 1GLF8H1Suburb1.6 km by 2.08 km
4. NGLF8H1NA few streets320 m by 415 m
5. JGLF8H1NJBuilding64 m by 83 m
6. XGLF8H1NJXEntrance12.8 m by 16.6 m
7. NGLF8H1NJXNDoorway2.56 m by 3.32 m

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