Khan el-Khalili

What the code says

The Grid Point Code for Khan el-Khalili is #J7MNH-66194. It names a cell 2.56 m north to south and 2.96 m east to west, centred on 30°02'50.96"N, 31°15'44.00"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

Major souk in Cairo

Code

#J7MNH-66194

With a check character

#J7MNH-66194*D

Short form

66194

Cell centre

30.047489, 31.262223

Cell size

2.56 m by 2.96 m

City

Cairo

Region

Cairo Governorate

Country

Egypt

How to give this address

On a sign, a form or a delivery note

The whole code, #J7MNH-66194. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Cairo

Khan el-Khalili 66194: 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 4.6 km east or west of Khan el-Khalili. 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

#J7MNH-66194*D. 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 46.3 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. NJ7MNMetropolitan area40 km by 46.3 km
2. HJ7MNHDistrict8 km by 9.25 km
3. 6J7MNH6Suburb1.6 km by 1.85 km
4. 6J7MNH66A few streets320 m by 370 m
5. 1J7MNH661Building64 m by 74 m
6. 9J7MNH6619Entrance12.8 m by 14.8 m
7. 4J7MNH66194Doorway2.56 m by 2.96 m

More in Egypt

• Cairo
• Alexandria
• Giza
• Shubrā al Khaymah
• Port Said
• Suez
• Madīnat an Naşr
• Al Mansurah
• Al Maḩallah al Kubrá
• Tanta
• Assiut
• Al Fayyum