Medina of Tunis

What the code says

The Grid Point Code for Medina of Tunis is #J0XD9-4GFRR. It names a cell 2.56 m north to south and 2.74 m east to west, centred on 36°47'56.46"N, 10°10'12.20"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

Old city of Tunis, Tunisia

Code

#J0XD9-4GFRR

With a check character

#J0XD9-4GFRR*M

Short form

4GFRR

Cell centre

36.799016, 10.170056

Cell size

2.56 m by 2.74 m

City

Tunis

Region

Tunis Governorate

Country

Tunisia

How to give this address

On a sign, a form or a delivery note

The whole code, #J0XD9-4GFRR. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Tunis

Medina of Tunis 4GFRR: 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 Medina of Tunis. 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

#J0XD9-4GFRR*M. 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. DJ0XDMetropolitan area40 km by 42.8 km
2. 9J0XD9District8 km by 8.56 km
3. 4J0XD94Suburb1.6 km by 1.71 km
4. GJ0XD94GA few streets320 m by 342 m
5. FJ0XD94GFBuilding64 m by 68.5 m
6. RJ0XD94GFREntrance12.8 m by 13.7 m
7. RJ0XD94GFRRDoorway2.56 m by 2.74 m

More in Tunisia

• Souk El Attarine
• Tunis
• Sfax
• Amphitheatre of El Jem
• Chott el Djerid