m I reading this right? 2 x 12 hour races in the same weekend from 2019?
https://www.sebringraceway.com/news/279-sebring-rejoins-fia-wec-calendar-in-2019which says
Sebring International Raceway will host twin 12-hour endurance races in March 2019 as the FIA World Endurance Championship (WEC) returns to the famed central Florida circuit. The race will be run the same weekend as the International Motorsports Association (IMSA) sanctioned Mobil 1 Twelve Hours of Sebring.
“We believe this is going to be one of the most exciting and action-packed Mobil 1 Twelve Hours of Sebring weekends in our venue’s storied history," stated Sebring Raceway President and General Manager Wayne Estes.
The announcement was made today in Mexico City where the WEC is running the fifth race of its 2017 season.
Sebring hosted the first FIA WEC race in 2012, and was also the site of the first FIA sanctioned Sports Car Manufacturers World Championship race in 1953.
Further information will be released at a later date when details are confirmed.
Sebring hosts the 66th Mobil 1 Twelve Hours of Sebring March 17th, 2018