Table:
text: 1994 IMSA GT Championship season
Schedule
Schedule
Race Length_ Class_ Circuit Date_
Indy Grand Prix 1 Hour GT Indianapolis Raceway Park July 10
Indy Grand Prix 2 Hours WSC Indianapolis Raceway Park July 10
Monterey Sports Car Grand Prix 1 Hour GT Laguna Seca Raceway July 24
Monterey Sports Car Grand Prix 2 Hours WSC Laguna Seca Raceway July 24
Grand Prix of Portland 1 Hour GT Portland International Raceway August 7
Grand Prix of Portland 2 Hours WSC Portland International Raceway August 7
Exxon World Sports Car Championships 1 Hour GT Phoenix International Raceway October 1
Exxon World Sports Car Championships 2 Hours WSC Phoenix International Raceway October 1

text: 1994 IMSA GT Championship season
Schedule
Schedule
Race Length_ Class_ Circuit Date_
Rolex 24 at Daytona 24 Hours All Daytona International Speedway February 5 February 6
Contac 12 Hours of Sebring 12 Hours All Sebring International Raceway March 19
Grand Prix of Atlanta 1 Hour GT Road Atlanta April 17
Grand Prix of Atlanta 2 Hours WSC Road Atlanta April 17
The New England Dodge Dealers Grand Prix 1 Hour GT Lime Rock Park May 30
The New England Dodge Dealers Grand Prix 2 Hours WSC Lime Rock Park May 30
The Glen Continental 3 Hours All Watkins Glen International June 26

Question: What date was the GT class at the Monterey Sports Car Grand Prix of the 1994 IMSA GT Championship season?

Question: How long was the GT class at Portland International Raceway in the 1994 IMSA GT Championship season?