GREAT CIRCLE NAV

Spherical-earth waypoints · WMM2020 declination · GPX for GPX Viewer

Point A — Origin

Latitude °

Longitude °

Point B — Destination

Latitude °

Longitude °

Waypoint Spacing

Distance (km)

Route Summary

—Total km

—Waypoints

—Init True°

Waypoint Table

#	LAT	LON	DECL	TRUE°	MAG°

DECL = magnetic declination (+ east / − west) · WMM2020 · ±0.5–1° accuracy
TRUE° = true bearing to next waypoint (great circle)
MAG° = magnetic bearing to fly = true − decl
Great circle = shortest path on spherical Earth

© 2026 TO INFINITY, PEOPLE OF PLETTENBERG BAY — MIT License
WMM2020 coefficients: NOAA, public domain. Not for primary navigation.