Complex sentence: The call letters were changed to WSKP on November 29; on December 2, WSKP dropped the WCRI-FM simulcast and launched an oldies format, branded as "Kool 1180".
Split into simpler sentences: The call letters were changed to WSKP on November 29. On December 2,2013 WSKP changed their format from classical (simulcasting WCRI-FM 95.9) to oldies, branded as "Kool 1180".