Niamey

What the code says

The Grid Point Code for Niamey is #JNHCG-JC791. It names a cell 2.56 m north to south and 3.33 m east to west, centred on 13°30'49.19"N, 2°06'35.29"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 Niamey, near its centre, and Niamey is the capital of Niger.

Code

#JNHCG-JC791

With a check character

#JNHCG-JC791*K

Short form

JC791

Cell centre

13.513663, 2.109804

Cell size

2.56 m by 3.33 m

Country

Niger

Population

1,323,691

How to give this address

On a sign, a form or a delivery note

The whole code, #JNHCG-JC791. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Niger

Niamey JC791: 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 Niamey. 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

#JNHCG-JC791*K. 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 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. CJNHCMetropolitan area40 km by 52 km
2. GJNHCGDistrict8 km by 10.4 km
3. JJNHCGJSuburb1.6 km by 2.08 km
4. CJNHCGJCA few streets320 m by 416 m
5. 7JNHCGJC7Building64 m by 83.1 m
6. 9JNHCGJC79Entrance12.8 m by 16.6 m
7. 1JNHCGJC791Doorway2.56 m by 3.33 m

More in Niger

• Niamey Grand Market
• Maradi
• Zinder
• Aïr Mountains