horse latitudes

noun[plural only]2

1. •
   The warm, subtropical bands which encircle the globe between approximately 30 and 35 degrees both north and south of the Equator, characterized by high atmospheric pressure and dry variable winds ranging from calm to light.

   • The captain used the idle Horse Latitudes to train and prepare the remainder of the crew. — 2011
2. •
   (figurative) A condition of relative inactivity, calm, or lethargy.

   • After months in the horse latitudes, retail and auto sales are scudding along at a brisk pace. — 1961