The polarity of the Sun's magnetic field reverses during a sunspot cycle. When does this reversal take place?

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The polarity of the Sun's magnetic field reverses when the sunspot number is at its maximum, which occurs approximately every 11 years. This is part of the solar cycle, where the magnetic field undergoes a complete cycle (including reversal and return to original polarity) every approximately 22 years, but the reversal itself happens at the peak of the sunspot cycle, which is every 11 years.

The Polarity of the Sun's Magnetic Field Reverses During a Sunspot