Along the equator, what is the approximate distance corresponding to a 1° change in longitude?

At the equator, one degree of longitude is approximately 60 NM, like one degree of latitude. Away from the equator, the east–west distance for a longitude degree decreases with latitude. **Key takeaway:** At the equator, `$1^\circ$` longitude is approximately `$60$ NM`.\n\n**Glossary:** **Longitude**: Angular position east or west of the prime meridian.