8 a.m. A greenmarket will open at Mount Sinai Medical Center, East 99th Street between Madison and Park avenues.
8 a.m. Clowns will issue fake tickets to motorists blocking bike lanes around Madison Square Park, 23rd Street and Broadway.
9:30 a.m. Gov. Eliot Spitzer will make an economic development announcement at the East Rail Yards, 33rd Street between 10th and 11th avenues.
10 a.m. Council man Tony Avella will promote free senior shopping bus service at 212-00 23rd Avenue in Queens.
10 a.m. Wounded soldiers will learn to scuba dive during a Diving Equipment & Marketing Association tour stop at the RPYC, Flatbush Avenue across Marine Parkway Gil Hodges Memorial Bridge, in Queens.
11 a.m. Faith leaders will call on the state Assembly to pass legislation allowing the implementation of the city's fair share solid waste management plan at Union Square Park, 14th Street between University and Broadway.
Noon. Seniors host community carnival; Comprehensive Care Management, 216 E. 99th St.
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