Home / Landmarks / Naval Station Mayport / Admiral David L McDonald Field

Naval Station Mayport / Admiral David L McDonald Field Coordinates

FL, US · Elevation 5m

Quick answer: Naval Station Mayport / Admiral David L McDonald Field is located at 30.391100, -81.424698 (N, 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

30.391100, -81.424698
DMS

Degrees Minutes Seconds

30°23'27.96"N 81°25'28.91"W
DDM

Degrees Decimal Minutes

30°23.4660'N 81°25.4819'W
UTM

Universal Transverse Mercator

17R 459200 3362200
MGRS

Military Grid Reference

17RMP5920062200
Geohash

Geohash Encoding

djqhghs2g
Plus Code

Open Location Code

862W9HRG+C3

Map Location

Map data © OpenStreetMap contributors

Antipodal Point

The point on the exact opposite side of Earth from Naval Station Mayport / Admiral David L McDonald Field. If you drilled straight through the planet's center, you would emerge here.

Antipodal coordinates

-30.391100, -81.424698

Hemisphere: S, W

DD

Decimal Degrees

-30.391100, -81.424698
DMS

Degrees Minutes Seconds

30°23'27.96"S 81°25'28.91"W
DDM

Degrees Decimal Minutes

30°23.4660'S 81°25.4819'W
UTM

Universal Transverse Mercator

17J 459200 6637800
MGRS

Military Grid Reference

17JMG5920037800
Geohash

Geohash Encoding

64w555kr5
Plus Code

Open Location Code

46XWJH5G+CM

MGRS Decoded

MGRS encodes location as a nested hierarchy — zone, band, grid square, and offsets. Here is what each component of 17RMP5920062200 means.

Component Value Meaning
UTM Zone 17 One of 60 vertical slices of Earth (6° wide each). Zone 17 runs -84° to -78° longitude.
Latitude Band R One of 20 horizontal bands (8° tall each), lettered C–X (skipping I and O). Indicates the general latitude region.
100 km Square MP A 100 × 100 km grid square within the zone/band. Column letter M (west–east) and row letter P (south–north).
Easting 59200 Distance east within the 100 km square. 5-digit value = 10 m resolution. Multiply by 1 to get meters.
Northing 62200 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 Naval Station Mayport / Admiral David L McDonald Field's geohash at every precision level alongside the bounding box each level represents.

Length Geohash Cell Size
1
d
≈ 5,000 × 5,000 km
2
dj
≈ 1,250 × 625 km
3
djq
≈ 156 × 156 km
4
djqh
≈ 39 × 20 km
5
djqhg
≈ 4.9 × 4.9 km
6
djqhgh
≈ 1.2 km × 610 m
7
djqhghs
≈ 153 × 153 m
8
djqhghs2
≈ 38 × 19 m
9
djqhghs2g
≈ 4.8 × 4.8 m

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

About Naval Station Mayport / Admiral David L McDonald Field

https://en.wikipedia.org/wiki/Naval_Station_Mayport

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

30.391100, -81.424698

DMS

30°23'27.96"N 81°25'28.91"W

DDM

30°23.4660'N 81°25.4819'W

UTM

17R 459200 3362200

MGRS

17RMP5920062200

GH

djqhghs2g

OLC

862W9HRG+C3

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