diff --git a/src/components/feed/feed-card.tsx b/src/components/feed/feed-card.tsx
index 7ca1663..6e7e753 100644
--- a/src/components/feed/feed-card.tsx
+++ b/src/components/feed/feed-card.tsx
@@ -38,7 +38,7 @@ export function FeedCard({ node, schemas, selected, onSelect, onHover }: FeedCar
   const avatar = pickString(p, "image_url") || thumb
   const handle = pickString(p, "twitter_handle")
   const type = node.node_type ?? "Unknown"
-  const when = timeAgo(typeof p.date === "number" ? p.date : node.date_added_to_graph)
+  const when = timeAgo(p.date ?? p.published_date)
 
   return (
     <article
diff --git a/src/components/layout/node-preview-panel.tsx b/src/components/layout/node-preview-panel.tsx
index 927028c..793d180 100644
--- a/src/components/layout/node-preview-panel.tsx
+++ b/src/components/layout/node-preview-panel.tsx
@@ -28,7 +28,7 @@ import { getWatches, watchNode, unwatchNode } from "@/lib/watch-api"
 import { cookieStorage } from "@/lib/cookie-storage"
 import type { SchemaNode } from "@/app/ontology/page"
 import { ConnectionsSection } from "./connections-section"
-import { formatDateAbsolute } from "@/lib/date-format"
+import { formatDateAbsolute, formatDateRelative } from "@/lib/date-format"
 import { useGraphStore } from "@/stores/graph-store"
 
 const DEEP_RESEARCH_NODE_TYPES = ["Topic"]
@@ -1147,6 +1147,16 @@ export function NodePreviewPanel({ node, onBack, schemas }: NodePreviewPanelProp
           {/* Title */}
           <p className="text-sm font-semibold">{title}</p>
 
+          {/* Publish / air date — omitted when no date field is present */}
+          {(props.date != null || props.published_date != null) && (
+            (() => {
+              const rel = formatDateRelative(props.date ?? props.published_date)
+              return rel ? (
+                <p className="text-[11px] font-mono text-muted-foreground -mt-2">{rel}</p>
+              ) : null
+            })()
+          )}
+
           {/* Description (suppressed when a rich widget already renders this field) */}
           {description && !widgetCoversDescription && (
             <p className="text-xs text-muted-foreground">{description}</p>
@@ -1290,15 +1300,12 @@ export function NodePreviewPanel({ node, onBack, schemas }: NodePreviewPanelProp
               {/* Core properties row */}
               {(() => {
                 const statusBadge = getStatusBadge(fp.status)
-                const dateStr = typeof fp.date_added_to_graph === "string" && fp.date_added_to_graph
-                  ? new Date(fp.date_added_to_graph).toLocaleDateString("en-US", { month: "short", day: "numeric", year: "numeric" })
-                  : null
                 const sats = typeof fp.boost === "number" && fp.boost > 0
                   ? fp.boost
                   : typeof fp.num_boost === "number" && fp.num_boost > 0
                     ? fp.num_boost
                     : null
-                if (!statusBadge && !dateStr && sats === null) return null
+                if (!statusBadge && sats === null) return null
                 return (
                   <div className="flex items-center gap-2 flex-wrap">
                     {statusBadge && (
@@ -1306,9 +1313,6 @@ export function NodePreviewPanel({ node, onBack, schemas }: NodePreviewPanelProp
                         {statusBadge.label}
                       </span>
                     )}
-                    {dateStr && (
-                      <span className="text-[11px] font-mono text-muted-foreground">{dateStr}</span>
-                    )}
                     {sats !== null && (
                       <div className="flex items-center gap-1 text-[11px] font-mono text-amber-400">
                         <Zap className="h-3 w-3" />
diff --git a/src/lib/__tests__/node-preview-panel.test.tsx b/src/lib/__tests__/node-preview-panel.test.tsx
index 48b2023..baf0d9c 100644
--- a/src/lib/__tests__/node-preview-panel.test.tsx
+++ b/src/lib/__tests__/node-preview-panel.test.tsx
@@ -156,6 +156,12 @@ function makeGraphData(node: GraphNode) {
   return { nodes: [node], edges: [] }
 }
 
+// jsdom doesn't implement Element.prototype.scrollTo — stub it so navigation
+// tests that trigger handleNavigate don't throw uncaught exceptions.
+if (typeof Element.prototype.scrollTo !== "function") {
+  Element.prototype.scrollTo = () => undefined
+}
+
 // Reset graph store mocks before each test so history navigation tests don't bleed
 beforeEach(() => {
   mockGraphNodes = []
@@ -399,15 +405,18 @@ describe("NodePreviewPanel – core property rendering", () => {
     })
   })
 
-  it("shows formatted date when date_added_to_graph is present", async () => {
-    const node = makeUnlockedNode({ date_added_to_graph: "2025-04-18" })
-    mockApiGet.mockResolvedValue(makeGraphData(node))
+  it("shows publish date when date property is present", () => {
+    const node: GraphNode = {
+      ...BASE_NODE,
+      properties: { ...BASE_NODE.properties, date: 1745020800 },
+    }
+    render(<NodePreviewPanel node={node} onBack={vi.fn()} schemas={[]} />)
+    expect(screen.getByText(/ago/i)).toBeInTheDocument()
+  })
 
+  it("shows no date when neither date nor published_date is present", () => {
     render(<NodePreviewPanel node={BASE_NODE} onBack={vi.fn()} schemas={[]} />)
-
-    await waitFor(() => {
-      expect(screen.getByText("Apr 18, 2025")).toBeInTheDocument()
-    })
+    expect(screen.queryByText(/ago/i)).not.toBeInTheDocument()
   })
 
   it("shows sats counter when boost is a positive number", async () => {