Ostrava

What the code says

The Grid Point Code for Ostrava is #PWFMC-2NNGG. It names a cell 2.56 m north to south and 2.21 m east to west, centred on 49°50'04.76"N, 18°16'55.34"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 Ostrava, near its centre.

Code

#PWFMC-2NNGG

With a check character

#PWFMC-2NNGG*K

Short form

2NNGG

Cell centre

49.834656, 18.282040

Cell size

2.56 m by 2.21 m

Region

Moravian-Silesian Region

Country

Czechia

Population

280,853

How to give this address

On a sign, a form or a delivery note

The whole code, #PWFMC-2NNGG. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Moravian-Silesian Region

Ostrava 2NNGG: 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 Ostrava. 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

#PWFMC-2NNGG*K. 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 34.5 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. MPWFMMetropolitan area40 km by 34.5 km
2. CPWFMCDistrict8 km by 6.89 km
3. 2PWFMC2Suburb1.6 km by 1.38 km
4. NPWFMC2NA few streets320 m by 276 m
5. NPWFMC2NNBuilding64 m by 55.1 m
6. GPWFMC2NNGEntrance12.8 m by 11 m
7. GPWFMC2NNGGDoorway2.56 m by 2.21 m

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