Avenue of the Baobabs

What the code says

The Grid Point Code for Avenue of the Baobabs is #8DM77-K7D8C. It names a cell 2.56 m north to south and 3.21 m east to west, centred on 20°15'03.01"S, 44°25'06.02"E, and it turns back into that cell on any phone or computer by arithmetic alone: no network, no account, no lookup table.

What it is

Protected area in Madagascar

Code

#8DM77-K7D8C

With a check character

#8DM77-K7D8C*M

Short form

K7D8C

Cell centre

-20.250835, 44.418340

Cell size

2.56 m by 3.21 m

Region

Menabe

Country

Madagascar

How to give this address

On a sign, a form or a delivery note

The whole code, #8DM77-K7D8C. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in Menabe

Avenue of the Baobabs K7D8C: 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 5.0 km east or west of Avenue of the Baobabs. 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

#8DM77-K7D8C*M. 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 50.1 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. 78DM7Metropolitan area40 km by 50.1 km
2. 78DM77District8 km by 10 km
3. K8DM77KSuburb1.6 km by 2.01 km
4. 78DM77K7A few streets320 m by 401 m
5. D8DM77K7DBuilding64 m by 80.2 m
6. 88DM77K7D8Entrance12.8 m by 16 m
7. C8DM77K7D8CDoorway2.56 m by 3.21 m

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