Abidjan

What the code says

The Grid Point Code for Abidjan is #H4G1W-82P2F. It names a cell 2.56 m north to south and 3.40 m east to west, centred on 5°21'15.98"N, 4°00'05.99"W, 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 Abidjan, near its centre.

Code

#H4G1W-82P2F

With a check character

#H4G1W-82P2F*9

Short form

82P2F

Cell centre

5.354438, -4.001664

Cell size

2.56 m by 3.40 m

Region

Abidjan Autonomous District

Country

Côte d'Ivoire

Population

6,321,017

How to give this address

On a sign, a form or a delivery note

The whole code, #H4G1W-82P2F. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Abidjan Autonomous District

Abidjan 82P2F: 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 Abidjan. 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

#H4G1W-82P2F*9. 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 53.2 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. 1H4G1Metropolitan area40 km by 53.2 km
2. WH4G1WDistrict8 km by 10.6 km
3. 8H4G1W8Suburb1.6 km by 2.13 km
4. 2H4G1W82A few streets320 m by 426 m
5. PH4G1W82PBuilding64 m by 85.1 m
6. 2H4G1W82P2Entrance12.8 m by 17 m
7. FH4G1W82P2FDoorway2.56 m by 3.4 m

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