Mount Rinjani

What the code says

The Grid Point Code for Mount Rinjani is #7P1L6-0HHM7. It names a cell 2.56 m north to south and 3.38 m east to west, centred on 8°24'59.98"S, 116°27'59.98"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

Active volcano in Lombok, Indonesia

Code

#7P1L6-0HHM7

With a check character

#7P1L6-0HHM7*D

Short form

0HHM7

Cell centre

-8.416662, 116.466662

Cell size

2.56 m by 3.38 m

Region

West Nusa Tenggara

Country

Indonesia

How to give this address

On a sign, a form or a delivery note

The whole code, #7P1L6-0HHM7. It needs nothing else: no city, no street, no network to read it back.

Said aloud, in West Nusa Tenggara

Mount Rinjani 0HHM7: 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 5.3 km east or west of Mount Rinjani. 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

#7P1L6-0HHM7*D. 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 52.9 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. L7P1LMetropolitan area40 km by 52.9 km
2. 67P1L6District8 km by 10.6 km
3. 07P1L60Suburb1.6 km by 2.11 km
4. H7P1L60HA few streets320 m by 423 m
5. H7P1L60HHBuilding64 m by 84.6 m
6. M7P1L60HHMEntrance12.8 m by 16.9 m
7. 77P1L60HHM7Doorway2.56 m by 3.38 m

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