Casbah of Algiers

What the code says

The Grid Point Code for Casbah of Algiers is #J0RDR-X801M. It names a cell 2.56 m north to south and 2.74 m east to west, centred on 36°46'59.97"N, 3°03'37.01"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

Citadel and neighborhood in Algiers, Algeria

Code

#J0RDR-X801M

With a check character

#J0RDR-X801M*0

Short form

X801M

Cell centre

36.783325, 3.060280

Cell size

2.56 m by 2.74 m

City

Algiers

Region

Algiers Province

Country

Algeria

How to give this address

On a sign, a form or a delivery note

The whole code, #J0RDR-X801M. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Algiers

Casbah of Algiers X801M: 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 4.3 km east or west of Casbah of Algiers. 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

#J0RDR-X801M*0. 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 42.8 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. DJ0RDMetropolitan area40 km by 42.8 km
2. RJ0RDRDistrict8 km by 8.56 km
3. XJ0RDRXSuburb1.6 km by 1.71 km
4. 8J0RDRX8A few streets320 m by 342 m
5. 0J0RDRX80Building64 m by 68.5 m
6. 1J0RDRX801Entrance12.8 m by 13.7 m
7. MJ0RDRX801MDoorway2.56 m by 2.74 m

More in Algeria

• Algiers
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