Cliffs of Moher

What the code says

The Grid Point Code for Cliffs of Moher is #R0WHW-8RD40. It names a cell 2.56 m north to south and 2.06 m east to west, centred on 52°56'10.02"N, 9°28'15.02"W, 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

Cliffs in Western Ireland, on the Atlantic shore

Code

#R0WHW-8RD40

With a check character

#R0WHW-8RD40*C

Short form

8RD40

Cell centre

52.936116, -9.470838

Cell size

2.56 m by 2.06 m

Region

Munster

Country

Ireland

How to give this address

On a sign, a form or a delivery note

The whole code, #R0WHW-8RD40. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Munster

Cliffs of Moher 8RD40: 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 3.2 km east or west of Cliffs of Moher. 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

#R0WHW-8RD40*C. 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 32.2 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. HR0WHMetropolitan area40 km by 32.2 km
2. WR0WHWDistrict8 km by 6.44 km
3. 8R0WHW8Suburb1.6 km by 1.29 km
4. RR0WHW8RA few streets320 m by 258 m
5. DR0WHW8RDBuilding64 m by 51.5 m
6. 4R0WHW8RD4Entrance12.8 m by 10.3 m
7. 0R0WHW8RD40Doorway2.56 m by 2.06 m

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