Christmas is Tuesday. All banks, government offices, courts and schools are closed. Post offices will be closed, but Express Mail will be delivered. The Long Island Rail Road will operate a holiday schedule, with off-peak fares and family fares throughout the day. Family fares allow as many as four children ages 5-11 to ride for the advance purchase fare of 75 cents per child each way when accompanied by a fare-paying adult or guardian. Children younger than 5 ride free. NICE buses will run a Sunday schedule. There will be no Suffolk County Transit service.