Winterzeitian

 is a gender simply connected to wintertime.

Etymology
From German, “Winterzeit” meaning “wintertime”.

Definitions

 * A gender simply connected to wintertime. - Mason, October 21st, 2020

Presumably, this counts as a cryobinary term due to winter being associated with coldness, winter, and ice.

History
was posted along with its flag on October 21st, 2020.