Halloween Traditional Door-to-Door Trick or Treating Copperas Cove, Texas ? While the City of Copperas Cove does not regulate Halloween Traditional Door-to-Door Trick or Treating, we do recommend for those wishing to participate that it be done safely on Halloween evening, Tuesday, October 31, 2023, between the hours of 6pm to 8pm. We encourage all motorists to use caution while driving in residential neighborhoods where children may be present on Halloween evening.