Rome is one hour ahead of London, six ahead of New York, seven ahead of Chicago, and nine ahead of Los Angeles. Rome is nine hours behind Sydney and 11 behind Auckland. Like the rest of Europe, Italy uses the 24-hour (or "military") clock, which means that after 12 noon you continue counting forward: 13:00 is 1 pm, 23:30 is 11:30 pm.
Timeanddate.com. Timeanddate.com can help you figure out the correct time anywhere. www.timeanddate.com/worldclock.