Caristia, or Cara cognatio, was a Roman feast day that fell on the 22nd of February, between the Feralia and the Terminalia. On this day the family gathered in the home for a big feast of thanksgiving for one another. Fathers were expected to be particularly attentive to their families during this time. Household and hearth deities were honored, but there were no major obligations as far as the state religion was concerned.
See Ovid’s Fasti (Amazon)