At which place Earth’s magnetic field becomes horizontal?

The place on Earth where the magnetic field becomes horizontal is called the magnetic equator. This location is where the Earth's magnetic field lines are parallel to the Earth's surface, causing the magnetic field to be horizontal. The magnetic equator is not necessarily aligned with the geographic equator; it can be located at different latitudes depending on the Earth's magnetic field configuration. It's worth noting that the magnetic equator is not a fixed line and can vary over time due to changes in the Earth's magnetic field.