Grid Point Code

Play

Niigata

Japan

With a code
#L1708-MDD32
Said aloud
Niigata MDD32

Get the code for your door

What the code says

The Grid Point Code for Niigata is #L1708-MDD32. It names a cell 2.56 m north to south and 2.70 m east to west, centred on 37°55'21.30"N, 139°02'28.51"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 Niigata, near its centre.

Code
#L1708-MDD32
With a check character
#L1708-MDD32*P
Short form
MDD32
Cell centre
37.922584, 139.041254
Cell size
2.56 m by 2.70 m
Country
Japan
Population
797,591

How to give this address

On a sign, a form or a delivery note

The whole code, #L1708-MDD32. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Japan

Niigata MDD32: 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 4.2 km east or west of Niigata. 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

#L1708-MDD32*P. 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 42.2 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. L170Metropolitan area40 km by 42.2 km
  2. L1708District8 km by 8.43 km
  3. L1708MSuburb1.6 km by 1.69 km
  4. L1708MDA few streets320 m by 337 m
  5. L1708MDDBuilding64 m by 67.4 m
  6. L1708MDD3Entrance12.8 m by 13.5 m
  7. L1708MDD32Doorway2.56 m by 2.7 m

More in Japan

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