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24-Feb-2020 NASA News item A Year of Surprising Science From NASA's InSight Mars Mission says:

A new understanding of Mars is beginning to emerge, thanks to the first year of NASA's InSight lander mission. Findings described in a set of six papers published today reveal a planet alive with quakes, dust devils and strange magnetic pulses.

and later:

In addition, scientists are intrigued by how these signals change over time. The measurements vary by day and night; they also tend to pulse around midnight. Theories are still being formed as to what causes such changes, but one possibility is that they're related to the solar wind interacting with the Martian atmosphere.

Question: Okay, how could the solar wind cause magnetic pulses at midnight, when the Sun is on the opposite side of the planet?

Possibly helpful: Discrete Aurora at Mars: Dependence on Upstream Solar Wind Conditions

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