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Grandfather Skiway Coordinates

U-A, AQ

Quick answer: Grandfather Skiway is located at -77.530242, -31.827393 (S, W).

Different tools require different formats — Garmin devices default to DDM, military maps use MGRS, topo maps use UTM, and web apps expect Decimal Degrees. Copy whichever format your device or application needs. Click any format abbreviation to learn how it works.

All Coordinate Formats

DD

Decimal Degrees

-77.530242, -31.827393
DMS

Degrees Minutes Seconds

77°31'48.87"S 31°49'38.61"W
DDM

Degrees Decimal Minutes

77°31.8145'S 31°49.6436'W
UTM

Universal Transverse Mercator

25C 528263 1393772
MGRS

Military Grid Reference

25CEP2826393772
Geohash

Geohash Encoding

561qgwpcx
Plus Code

Open Location Code

29JCF59F+RC

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

The point on the exact opposite side of Earth from Grandfather Skiway. If you drilled straight through the planet's center, you would emerge here.

Antipodal coordinates

77.530242, -31.827393

Hemisphere: N, W

DD

Decimal Degrees

77.530242, -31.827393
DMS

Degrees Minutes Seconds

77°31'48.87"N 31°49'38.61"W
DDM

Degrees Decimal Minutes

77°31.8145'N 31°49.6436'W
UTM

Universal Transverse Mercator

25X 528263 8606228
MGRS

Military Grid Reference

25XEG2826306228
Geohash

Geohash Encoding

gmc359zyr
Plus Code

Open Location Code

C99CG5JF+2C

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 25CEP2826393772 means.

Component Value Meaning
UTM Zone 25 One of 60 vertical slices of Earth (6° wide each). Zone 25 runs -36° to -30° longitude.
Latitude Band C One of 20 horizontal bands (8° tall each), lettered C–X (skipping I and O). Indicates the general latitude region.
100 km Square EP A 100 × 100 km grid square within the zone/band. Column letter E (west–east) and row letter P (south–north).
Easting 28263 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 93772 Distance north within the 100 km square. Same resolution as easting (10 m).

Geohash Precision

A geohash encodes coordinates by subdividing the Earth into progressively smaller cells. Each extra character roughly halves the cell area. The table below shows Grandfather Skiway's geohash at every precision level alongside the bounding box each level represents.

Length Geohash Cell Size
1
5
≈ 5,000 × 5,000 km
2
56
≈ 1,250 × 625 km
3
561
≈ 156 × 156 km
4
561q
≈ 39 × 20 km
5
561qg
≈ 4.9 × 4.9 km
6
561qgw
≈ 1.2 km × 610 m
7
561qgwp
≈ 153 × 153 m
8
561qgwpc
≈ 38 × 19 m
9
561qgwpcx
≈ 4.8 × 4.8 m

Precision 9 (highlighted) is the default and provides sub-5-metre accuracy for most applications.

About Grandfather Skiway

Grandfather Skiway (AQ-0016) is a medium airport in Antartica, AQ.

Live Converter

The coordinates above are fixed to this landmark. Use this converter to enter any other coordinates — such as a nearby trailhead, parking area, or a location you want to compare — and get all 7 formats instantly.

DD

-77.530242, -31.827393

DMS

77°31'48.87"S 31°49'38.61"W

DDM

77°31.8145'S 31°49.6436'W

UTM

25C 528263 1393772

MGRS

25CEP2826393772

GH

561qgwpcx

OLC

29JCF59F+RC

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