diff --git a/src/routes/api/social/calendar/[slug]/+server.ts b/src/routes/api/social/calendar/[slug]/+server.ts
index a6b8a0e..9e75af0 100644
--- a/src/routes/api/social/calendar/[slug]/+server.ts
+++ b/src/routes/api/social/calendar/[slug]/+server.ts
@@ -97,18 +97,23 @@ async function loadFonts() {
   return fontCache;
 }
 
+// terminZeit ist mit Offset gespeichert (z. B. 10:00+02:00 = 08:00 UTC).
+// Rendering muss in Europe/Berlin erzwungen werden — sonst rendert der
+// SSR-Prozess (Server-TZ = UTC) 2h zu früh (10 Uhr → 8 Uhr auf dem Bild).
+const TZ = "Europe/Berlin";
+
 function formatDate(iso: string | undefined): { date: string; time: string | null } {
   if (!iso) return { date: "", time: null };
   const d = new Date(iso);
-  const date = d.toLocaleDateString("de-DE", { day: "2-digit", month: "long", year: "numeric" });
+  const date = d.toLocaleDateString("de-DE", { day: "2-digit", month: "long", year: "numeric", timeZone: TZ });
   const hasTime = !/T00:00:00/.test(iso);
-  const time = hasTime ? d.toLocaleTimeString("de-DE", { hour: "2-digit", minute: "2-digit" }) : null;
+  const time = hasTime ? d.toLocaleTimeString("de-DE", { hour: "2-digit", minute: "2-digit", timeZone: TZ }) : null;
   return { date, time };
 }
 
 function weekday(iso: string | undefined): string {
   if (!iso) return "";
-  return new Date(iso).toLocaleDateString("de-DE", { weekday: "long" });
+  return new Date(iso).toLocaleDateString("de-DE", { weekday: "long", timeZone: TZ });
 }
 
 /**
@@ -139,7 +144,7 @@ async function loadEventImage(
 
 const cache = new Map<string, { png: Buffer; ts: number }>();
 const CACHE_TTL = 10 * 60_000; // 10min
-const CACHE_VERSION = "v26";
+const CACHE_VERSION = "v27";
 
 function parseFormat(v: string | null): Format {
   if (v === "square") return "square";
diff --git a/src/routes/api/social/post/[slug]/+server.ts b/src/routes/api/social/post/[slug]/+server.ts
index b5bbdfe..3fc7064 100644
--- a/src/routes/api/social/post/[slug]/+server.ts
+++ b/src/routes/api/social/post/[slug]/+server.ts
@@ -90,6 +90,7 @@ function formatDateLong(iso: string | undefined | null): string {
       day: "2-digit",
       month: "long",
       year: "numeric",
+      timeZone: "Europe/Berlin",
     });
   } catch {
     return "";