Mercury enters the tropical zodiac sign of Libra on August 31. Mercury gets to 10 Libra September 7, gradually slowing until a stationary position 24-25 Libra on September 24-25, retrograde from September 25 to October 18, turning stationary-direct October 18, and moving forward, arriving at 24-25 Libra on November 2.
So that’s late August to early November, Mercury is totally in Libra, a cardinal air sign. Long time. Meaning?
Relationships. Romance? That, too, but relationships gets the “Oops, that’s not what I meant,” treatment.