diff --git a/src/components/sections/OpenSpacesCalendar.astro b/src/components/sections/OpenSpacesCalendar.astro
index 5fd87b583..8e702d2af 100644
--- a/src/components/sections/OpenSpacesCalendar.astro
+++ b/src/components/sections/OpenSpacesCalendar.astro
@@ -15,9 +15,6 @@ export interface Props {
 }
 
 const {
-  calendarId = "c_b87075b29cf4a9dd4da3fe724fcba92a4b406aa3f91cb7e7ce50fede43215b17@group.calendar.google.com",
-  timeMin = "20260713",
-  timeMax = "20260719",
   rooms = ["S4(1,2,3)", "S4(4)", "S4(5)"],
 } = Astro.props;
 
@@ -35,6 +32,7 @@ function fmtDateLabel(isoDate: string): string {
   } catch { return isoDate; }
 }
 
+
 // ── Main data fetch ──
 
 const allEvents = await fetchOpenSpacesEvents();
@@ -57,7 +55,7 @@ const displayRooms = rooms;
 function buildTimeSlots(dayEvents: OpenSpaceEvent[]) {
   const timeMap = new Map<string, Record<string, OpenSpaceEvent>>();
   for (const ev of dayEvents) {
-    const label = ev.startTime;
+    const label = fmtTime(ev.startISO);
     if (!timeMap.has(label)) timeMap.set(label, {});
     const slot = timeMap.get(label);
     if (slot) slot[ev.room] = ev;
@@ -87,7 +85,7 @@ const hasEvents = sortedDates.length > 0;
             {timeSlots.length > 0 ? (
               <div class="osp-grid" style={`--osp-cols: ${displayRooms.length}`}>
                 <div class="osp-grid-header">
-                  <div class="osp-time-col osp-header-cell">Time</div>
+                  <div class="osp-time-col osp-header-cell">Time (CEST)</div>
                   {displayRooms.map((room) => (
                     <div class="osp-room-col osp-header-cell">{room}</div>
                   ))}
diff --git a/src/pages/session/open-space/[slug].astro b/src/pages/session/open-space/[slug].astro
index 52964d602..73f07c61f 100644
--- a/src/pages/session/open-space/[slug].astro
+++ b/src/pages/session/open-space/[slug].astro
@@ -16,11 +16,19 @@ export async function getStaticPaths() {
 
 const { event } = Astro.props as { event: OpenSpaceEvent };
 
+const tz = "Europe/Warsaw";
+
 const dateLabel = new Date(event.date + "T12:00:00Z").toLocaleDateString(
   "en-GB",
-  { timeZone: "Europe/Warsaw", weekday: "long", day: "numeric", month: "long", year: "numeric" }
+  { timeZone: tz, weekday: "long", day: "numeric", month: "long", year: "numeric" }
 );
 
+const timeLabel = (() => {
+  const start = new Date(event.startISO).toLocaleTimeString("en-GB", { timeZone: tz, hour: "2-digit", minute: "2-digit" });
+  const end = new Date(event.endISO).toLocaleTimeString("en-GB", { timeZone: tz, hour: "2-digit", minute: "2-digit" });
+  return `${start} \u2013 ${end} CEST`;
+})();
+
 const backUrl = event.date
   ? `/open-spaces#osp-day-${event.date}`
   : "/open-spaces";
@@ -47,9 +55,7 @@ const backUrl = event.date
       <dt class="font-bold text-text">Date:</dt>
       <dd class="text-text">{dateLabel}</dd>
       <dt class="font-bold text-text">Time:</dt>
-      <dd class="text-text">
-        {event.startTime} &ndash; {event.endTime}
-      </dd>
+      <dd class="text-text">{timeLabel}</dd>
     </dl>
 
     <div class="mb-8">
diff --git a/src/utils/openSpaces.ts b/src/utils/openSpaces.ts
index c48c13a35..4f6d6971f 100644
--- a/src/utils/openSpaces.ts
+++ b/src/utils/openSpaces.ts
@@ -27,7 +27,7 @@ export interface OpenSpaceEvent {
 
 function stripHtml(s: string): string {
   return s
-    .replace(/[<>]/g, "")
+    .replace(/<[^>]*(?:>|$)/g, "")
     .replace(/https?:\/\/ep[^.]*\.europython\.eu(\/[^\s<!]+)/g, "[$1]($1)")
     .replace(/https?:\/\/[^\s]+/g, "")
     .trim()
@@ -36,7 +36,7 @@ function stripHtml(s: string): string {
 
 function detectRoom(rawDesc: string): string {
   const plain = rawDesc
-    .replace(/[<>]/g, "")
+    .replace(/<[^>]*(?:>|$)/g, "")
     .replace(/https?:\/\/ep[^.]*\.europython\.eu(\/[^\s<!]+)/g, "[$1]($1)")
     .replace(/https?:\/\/[^\s]+/g, "")
     .replace(/&#39;/g, "'")
@@ -55,7 +55,7 @@ function detectRoom(rawDesc: string): string {
 
 function extractHost(rawDesc: string): string {
   const plain = rawDesc
-    .replace(/[<>]/g, "")
+    .replace(/<[^>]*(?:>|$)/g, "")
     .replace(/&#39;/g, "'")
     .replace(/&amp;/g, "&")
     .replace(/\\n/g, "\n");
@@ -150,8 +150,8 @@ function parseICal(ics: string): OpenSpaceEvent[] {
     const summary = getVal("SUMMARY");
     const rawDescription = getVal("DESCRIPTION");
     const organizer = getVal("ORGANIZER");
-    let dtStartRaw = getVal("DTSTART");
-    let dtEndRaw = getVal("DTEND");
+    const dtStartRaw = getVal("DTSTART");
+    const dtEndRaw = getVal("DTEND");
     if (!dtStartRaw) continue;
 
     const startDt = parseDt(dtStartRaw);
@@ -175,7 +175,7 @@ function parseICal(ics: string): OpenSpaceEvent[] {
     );
     if (descMatch) {
       fullDescription = descMatch[1]
-        .replace(/[<>]/g, "")
+        .replace(/<[^>]*(?:>|$)/g, "")
         .replace(/&#39;/g, "'")
         .replace(/&amp;/g, "&")
         .replace(/\\n/g, "\n")