A compass for a moving Earth

The North That Moves

The north magnetic pole moved 36 kilometres in one year of observation. The needle is the same instrument; its direction depends on place and time.

36 km/yr the north pole’s average movement between 2025 and 2026 · ≈ 99 m/day
What does the needle see? WMM2025 · NOAA/BGS
Declination +6.3°

In Bucharest, in 2025, magnetic north is 6.3° to the east of geographic north.

01 / two directions

The needle follows the field.

North on a map is a geometric convention. North, as a compass needle finds it, is a reading of the magnetic field — and the field changes.

The difference between those directions is called magnetic declination. In Bucharest, the WMM2025 model estimates 6.26° east in 2025 and 6.59° in 2030 — a difference of 0.33°.

85.762° N the pole’s latitude in 2025
139.298° E the pole’s longitude in 2025

On the dial

Geographic north
Magnetic north

The red line moves when you change the place or year. The pale line stays with the geographic reference.

02 / the trace

The point that leaves

On a map, the pole looks like a point. In a series, it becomes a trace. Pick a year and follow the annual position of the north magnetic pole from 1590 to 2025.

Year on the trace 2025
85.78° N · 138.06° E the annual position closest to the selected year
Selected points from NOAA’s annual series
YearLatitudeLongitude
159073.92° N111.83° W
183170.35° N97.99° W
200080.97° N109.64° W
201586.47° N167.79° W
202585.78° N138.06° E

03 / how to read it

A model for a changing field

World Magnetic Model 2025, produced by NOAA and the British Geological Survey, covers calculations for 2025–2030; its standard validity period ends in late 2029. WMM2025 uses 168 spherical-harmonic coefficients to estimate the field’s direction at a given coordinate.

The compass calculates declination for the chosen place and year. The paper-coloured trace shows NOAA’s annual positions for the north magnetic pole.

This is a reading of the WMM2025 model for the places and years on this page. Do not use this page as your sole navigation reference: the magnetic field can vary over short periods, and local measurements carry their own uncertainty.