Grid Point Code
Source on GitHub

Play

Gdańsk

PomeraniaPoland

Grid Point Code for Gdańsk
With a code
#PK234-RD7D2
Said aloud
Gdańsk RD7D2

Get the code for your door

What the code says

The Grid Point Code for Gdańsk is #PK234-RD7D2. It names a cell 2.56 m north to south and 1.99 m east to west, centred on 54°21'08.17"N, 18°38'56.81"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 Gdańsk, near its centre.

Code
#PK234-RD7D2
With a check character
#PK234-RD7D2*1
Short form
RD7D2
Cell centre
54.352270, 18.649114
Cell size
2.56 m by 1.99 m
Region
Pomerania
Country
Poland
Population
487,371

How to give this address

On a sign, a form or a delivery note

The whole code, #PK234-RD7D2. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Pomerania

Gdańsk RD7D2: 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 3.1 km east or west of Gdańsk. 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

#PK234-RD7D2*1. 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 31.1 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. PK23Metropolitan area40 km by 31.1 km
  2. PK234District8 km by 6.23 km
  3. PK234RSuburb1.6 km by 1.25 km
  4. PK234RDA few streets320 m by 249 m
  5. PK234RD7Building64 m by 49.8 m
  6. PK234RD7DEntrance12.8 m by 9.97 m
  7. PK234RD7D2Doorway2.56 m by 1.99 m

More in Poland

City, region and population from GeoNames, under CC BY 4.0.