What is "banian days"

Banian \Ban"ian\ (b[a^]n"yan or b[a^]n*y[a^]n"; 277), n. [Skr. banij merchant. The tree was so named by the English, because used as a market place by the merchants.]

1. A Hindu trader, merchant, cashier, or money changer.

2. A man's loose gown, like that worn by the Banians.

3. (Bot.) The Indian fig. See Banyan.

   Banian days (Naut.), days in which the sailors have no flesh meat served out to them. This use seems to be borrowed from the Banians or Banya race, who eat no flesh.