Hiroshima

What the code says

The Grid Point Code for Hiroshima is #L8X4C-K2HNW. It names a cell 2.56 m north to south and 2.82 m east to west, centred on 34°24'00.00"N, 132°27'00.01"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 Hiroshima, near its centre.

Code

#L8X4C-K2HNW

With a check character

#L8X4C-K2HNW*9

Short form

K2HNW

Cell centre

34.399999, 132.450002

Cell size

2.56 m by 2.82 m

Country

Japan

Population

1,200,754

How to give this address

On a sign, a form or a delivery note

The whole code, #L8X4C-K2HNW. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Japan

Hiroshima K2HNW: 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 4.4 km east or west of Hiroshima. 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

#L8X4C-K2HNW*9. 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 44.1 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. 4L8X4Metropolitan area40 km by 44.1 km
2. CL8X4CDistrict8 km by 8.82 km
3. KL8X4CKSuburb1.6 km by 1.76 km
4. 2L8X4CK2A few streets320 m by 353 m
5. HL8X4CK2HBuilding64 m by 70.5 m
6. NL8X4CK2HNEntrance12.8 m by 14.1 m
7. WL8X4CK2HNWDoorway2.56 m by 2.82 m

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