Pravčická brána

What the code says

The Grid Point Code for Pravčická brána is #PWJ58-K9PLR. It names a cell 2.56 m north to south and 2.16 m east to west, centred on 50°53'02.28"N, 14°16'52.95"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

Rock formation in Bohemian Switzerland, Czech Republic

Code

#PWJ58-K9PLR

With a check character

#PWJ58-K9PLR*J

Short form

K9PLR

Cell centre

50.883967, 14.281375

Cell size

2.56 m by 2.16 m

Region

Ústí nad Labem Region

Country

Czechia

How to give this address

On a sign, a form or a delivery note

The whole code, #PWJ58-K9PLR. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Ústí nad Labem Region

Pravčická brána K9PLR: 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 3.4 km east or west of Pravčická brána. 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

#PWJ58-K9PLR*J. 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 33.7 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. 5PWJ5Metropolitan area40 km by 33.7 km
2. 8PWJ58District8 km by 6.74 km
3. KPWJ58KSuburb1.6 km by 1.35 km
4. 9PWJ58K9A few streets320 m by 270 m
5. PPWJ58K9PBuilding64 m by 53.9 m
6. LPWJ58K9PLEntrance12.8 m by 10.8 m
7. RPWJ58K9PLRDoorway2.56 m by 2.16 m

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