Grid Point Code

Play

Naha

OkinawaJapan

With a code
#LC3CX-45M9G
Said aloud
Naha 45M9G

Get the code for your door

What the code says

The Grid Point Code for Naha is #LC3CX-45M9G. It names a cell 2.56 m north to south and 3.07 m east to west, centred on 26°12'46.84"N, 127°40'42.64"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 Naha, near its centre.

Code
#LC3CX-45M9G
With a check character
#LC3CX-45M9G*G
Short form
45M9G
Cell centre
26.213011, 127.678510
Cell size
2.56 m by 3.07 m
Region
Okinawa
Country
Japan
Population
317,625

How to give this address

On a sign, a form or a delivery note

The whole code, #LC3CX-45M9G. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Okinawa

Naha 45M9G: 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 4.8 km east or west of Naha. 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

#LC3CX-45M9G*G. 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 47.9 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. LC3CMetropolitan area40 km by 47.9 km
  2. LC3CXDistrict8 km by 9.59 km
  3. LC3CX4Suburb1.6 km by 1.92 km
  4. LC3CX45A few streets320 m by 384 m
  5. LC3CX45MBuilding64 m by 76.7 m
  6. LC3CX45M9Entrance12.8 m by 15.3 m
  7. LC3CX45M9GDoorway2.56 m by 3.07 m

More in Japan

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