On May 1, 1953, ABC's New York City flagship stations – WJZ, WJZ-FM and WJZ-TV – changed their respective callsigns to WABC, WABC-FM and WABC-TV, and moved their operations to facilities at 7 West 66th Street, one block away from Central Park.
When did ABC's New York flagship stations change their call signs?
May 1, 1953