Mars gets as close to the Earth as it gets, an event that happens once every two years. Sponsored by the Southern Cross Astronomical Society. Coincides with Moonlight Jazz Concert. 8 p.m. Deering Estate at Cutler, 16701 SW 72nd Ave. Details: (305) 235-1668, ext. 225.
BALCONY & CONTAINER GARDENING
First in a series of three classes on the most suitable plants for different exposures. Topics include wind conditions, soil additives, temperatures, fertilizers. 10 a.m. Miami Beach Botanical Garden, 2000 Convention Center Drive, Miami Beach. Details: (305) 673-7256.
Presented by the Miami Design Preservation League as part of Second Thursday events. Free. 6:30-7:3O pm. Departs from Miami Beach Community Church, 510 Lincoln Road, Miami Beach. Details: (305) 673-7500.
OCEAN LIFEGUARD TOURNAMENT
7th annual Miami-Dade County competition. 3 p.m. Crandon Park Beach, 4000 Crandon Blvd., Key Biscayne. Details: (305) 361-7373.