Nan Madol

What the code says

The Grid Point Code for Nan Madol is #LWNP0-1T883. It names a cell 2.56 m north to south and 3.40 m east to west, centred on 6°50'31.01"N, 158°19'55.98"E, 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

Ruined city of Federated States of Micronesesia

Code

#LWNP0-1T883

With a check character

#LWNP0-1T883*L

Short form

1T883

Cell centre

6.841947, 158.332216

Cell size

2.56 m by 3.40 m

Region

Pohnpei State

Country

Micronesia

How to give this address

On a sign, a form or a delivery note

The whole code, #LWNP0-1T883. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Pohnpei State

Nan Madol 1T883: 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 5.3 km east or west of Nan Madol. 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

#LWNP0-1T883*L. 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 53.1 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. PLWNPMetropolitan area40 km by 53.1 km
2. 0LWNP0District8 km by 10.6 km
3. 1LWNP01Suburb1.6 km by 2.12 km
4. TLWNP01TA few streets320 m by 424 m
5. 8LWNP01T8Building64 m by 84.9 m
6. 8LWNP01T88Entrance12.8 m by 17 m
7. 3LWNP01T883Doorway2.56 m by 3.4 m

More in Micronesia

• Palikir