Port Moresby

What the code says

The Grid Point Code for Port Moresby is #671M7-5X7GK. It names a cell 2.56 m north to south and 3.37 m east to west, centred on 9°28'38.06"S, 147°09'03.25"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

The point used is the one GeoNames records for Port Moresby, near its centre, and Port Moresby is the capital of Papua New Guinea.

Code

#671M7-5X7GK

With a check character

#671M7-5X7GK*D

Short form

5X7GK

Cell centre

-9.477239, 147.150904

Cell size

2.56 m by 3.37 m

Region

National Capital

Country

Papua New Guinea

Population

283,733

How to give this address

On a sign, a form or a delivery note

The whole code, #671M7-5X7GK. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in National Capital

Port Moresby 5X7GK: 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 Port Moresby. 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

#671M7-5X7GK*D. 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 52.7 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. M671MMetropolitan area40 km by 52.7 km
2. 7671M7District8 km by 10.5 km
3. 5671M75Suburb1.6 km by 2.11 km
4. X671M75XA few streets320 m by 422 m
5. 7671M75X7Building64 m by 84.3 m
6. G671M75X7GEntrance12.8 m by 16.9 m
7. K671M75X7GKDoorway2.56 m by 3.37 m

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