Old City

What the code says

The Grid Point Code for Old City is #J4CG4-N15WP. It names a cell 2.56 m north to south and 2.61 m east to west, centred on 40°21'54.12"N, 49°50'09.59"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

The historical core of Baku, World Heritage Site

Code

#J4CG4-N15WP

With a check character

#J4CG4-N15WP*X

Short form

N15WP

Cell centre

40.365032, 49.835996

Cell size

2.56 m by 2.61 m

City

Baku

Region

Baku

Country

Azerbaijan

How to give this address

On a sign, a form or a delivery note

The whole code, #J4CG4-N15WP. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Baku

Old City N15WP: 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 4.1 km east or west of Old City. 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

#J4CG4-N15WP*X. 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 40.7 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. GJ4CGMetropolitan area40 km by 40.7 km
2. 4J4CG4District8 km by 8.14 km
3. NJ4CG4NSuburb1.6 km by 1.63 km
4. 1J4CG4N1A few streets320 m by 326 m
5. 5J4CG4N15Building64 m by 65.1 m
6. WJ4CG4N15WEntrance12.8 m by 13 m
7. PJ4CG4N15WPDoorway2.56 m by 2.61 m

More in Azerbaijan

• Baku
• Sumgayit
• Ganja
• Gobustan State Historical and Cultural Reserve
• Yanar Dagh
• Göygöl National Park