Japanese submarine I-24 fired 10 shells at the Sydney Harbor Bridge in Sydney, Australia shortly after 0000 hours, scoring no hits on the bridge but destroyed one house nearby. At 0215 hours, I-21 surfaced near Newcastle, Australia and fired 34 shells, damaging a house near the BHP steelworks; as the coastal guns at Fort Scratchley fired at I-21 (which caused no damage), this became the only time where Australian land-based guns would fire at a Japanese ship in the war.
