Al Ḩudaydah

What the code says

The Grid Point Code for Al Ḩudaydah is #JKL52-FMX65. It names a cell 2.56 m north to south and 3.31 m east to west, centred on 14°47'52.15"N, 42°57'16.32"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 Al Ḩudaydah, near its centre.

Code

#JKL52-FMX65

With a check character

#JKL52-FMX65*6

Short form

FMX65

Cell centre

14.797820, 42.954532

Cell size

2.56 m by 3.31 m

Region

Al Hudaydah

Country

Yemen

Population

734,699

How to give this address

On a sign, a form or a delivery note

The whole code, #JKL52-FMX65. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Al Hudaydah

Al Ḩudaydah FMX65: 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 Al Ḩudaydah. 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

#JKL52-FMX65*6. 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 51.7 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. 5JKL5Metropolitan area40 km by 51.7 km
2. 2JKL52District8 km by 10.3 km
3. FJKL52FSuburb1.6 km by 2.07 km
4. MJKL52FMA few streets320 m by 413 m
5. XJKL52FMXBuilding64 m by 82.7 m
6. 6JKL52FMX6Entrance12.8 m by 16.5 m
7. 5JKL52FMX65Doorway2.56 m by 3.31 m

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