Grytviken

What the code says

The Grid Point Code for Grytviken is #2M019-3FMPP. It names a cell 2.56 m north to south and 2.00 m east to west, centred on 54°16'51.96"S, 36°30'33.12"W, 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 Grytviken, near its centre, and Grytviken is the capital of South Georgia and the South Sandwich Islands.

Code

#2M019-3FMPP

With a check character

#2M019-3FMPP*F

Short form

3FMPP

Cell centre

-54.281100, -36.509199

Cell size

2.56 m by 2.00 m

Country

South Georgia and the South Sandwich Islands

Population

2

How to give this address

On a sign, a form or a delivery note

The whole code, #2M019-3FMPP. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in South Georgia and the South Sandwich Islands

Grytviken 3FMPP: 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 Grytviken. 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

#2M019-3FMPP*F. 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 31.2 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. 12M01Metropolitan area40 km by 31.2 km
2. 92M019District8 km by 6.24 km
3. 32M0193Suburb1.6 km by 1.25 km
4. F2M0193FA few streets320 m by 250 m
5. M2M0193FMBuilding64 m by 49.9 m
6. P2M0193FMPEntrance12.8 m by 9.98 m
7. P2M0193FMPPDoorway2.56 m by 2 m