diff --git a/src/ceeker/tui/view.clj b/src/ceeker/tui/view.clj
index 6d16187..5434602 100644
--- a/src/ceeker/tui/view.clj
+++ b/src/ceeker/tui/view.clj
@@ -18,8 +18,8 @@
 
 (def ^:const compact-threshold
   "Terminal width (columns) below which compact card view is used.
-   Derived from table row width: prefix(4) + columns + gaps = ~98."
-  100)
+   Derived from table row width: prefix(4) + columns + gaps = 109."
+  110)
 
 (def ^:const max-card-message-lines
   "Maximum number of message lines shown in a card."
@@ -138,12 +138,12 @@
                      (conj current-line c) lines))))))))
 
 (def ^:private time-formatter
-  "HH:mm:ss formatter for local time display.
+  "yyyy-MM-dd HH:mm:ss formatter for local datetime display.
    Immutable and safe to initialize at build time."
-  (DateTimeFormatter/ofPattern "HH:mm:ss"))
+  (DateTimeFormatter/ofPattern "yyyy-MM-dd HH:mm:ss"))
 
 (defn- format-time
-  "Formats an ISO-8601 UTC timestamp to HH:mm:ss in local timezone.
+  "Formats an ISO-8601 UTC timestamp to yyyy-MM-dd HH:mm:ss in local timezone.
    Resolves the system timezone at runtime to avoid baking the build
    machine's timezone into GraalVM native images."
   [updated]
diff --git a/test/ceeker/tui/view_test.clj b/test/ceeker/tui/view_test.clj
index fe00f0b..98c93d4 100644
--- a/test/ceeker/tui/view_test.clj
+++ b/test/ceeker/tui/view_test.clj
@@ -465,9 +465,9 @@
           expected (-> (Instant/parse utc-ts)
                        (.atZone (ZoneId/systemDefault))
                        (.format (DateTimeFormatter/ofPattern
-                                 "HH:mm:ss")))]
+                                 "yyyy-MM-dd HH:mm:ss")))]
       (is (= expected result))
-      (is (re-matches #"\d{2}:\d{2}:\d{2}" result)))))
+      (is (re-matches #"\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}" result)))))
 
 (deftest test-format-time-nil-and-short
   (testing "nil returns empty string"
@@ -488,9 +488,19 @@
           expected (-> (Instant/parse utc-ts)
                        (.atZone (ZoneId/systemDefault))
                        (.format (DateTimeFormatter/ofPattern
-                                 "HH:mm:ss")))]
+                                 "yyyy-MM-dd HH:mm:ss")))]
       (is (= expected (#'view/format-time utc-ts))))))
 
+(deftest test-format-session-line-includes-full-datetime
+  (testing "table rows show full local datetime, not time only"
+    (let [session (make-session "msg")
+          plain (strip-ansi (#'view/format-session-line session false))
+          expected (-> (Instant/parse (:last-updated session))
+                       (.atZone (ZoneId/systemDefault))
+                       (.format (DateTimeFormatter/ofPattern
+                                 "yyyy-MM-dd HH:mm:ss")))]
+      (is (str/includes? plain expected)))))
+
 ;; -- worktree truncation tests --
 
 (deftest test-long-worktree-truncated-in-table
@@ -576,3 +586,8 @@
               height))
       (is (str/includes? plain "project-3"))
       (is (not (str/includes? plain "project-0"))))))
+
+(deftest test-use-compact-threshold-covers-datetime-column-width
+  (testing "auto mode switches to card view below full table width"
+    (is (false? (#'view/use-compact? :auto 110)))
+    (is (true? (#'view/use-compact? :auto 109)))))