diff --git a/crates/agent_ui/src/acp/thread_history.rs b/crates/agent_ui/src/acp/thread_history.rs
index 9cfe30278e1e46d95c00b3c881358a4b00786801..f8a2006f8fc9d2ece6d4a5526482dec5df948686 100644
--- a/crates/agent_ui/src/acp/thread_history.rs
+++ b/crates/agent_ui/src/acp/thread_history.rs
@@ -673,7 +673,7 @@ impl EntryTimeFormat {
                 timezone,
                 time_format::TimestampFormat::EnhancedAbsolute,
             ),
-            EntryTimeFormat::TimeOnly => time_format::format_time(timestamp),
+            EntryTimeFormat::TimeOnly => time_format::format_time(timestamp.to_offset(timezone)),
         }
     }
 }