diff --git a/PLUG.md b/PLUG.md
index eceece8..aaddb12 100644
--- a/PLUG.md
+++ b/PLUG.md
@@ -1,6 +1,6 @@
 ---
 name: Library/sstent/icalendar
-version: "0.4.2"
+version: "0.4.3"
 tags: meta/library
 files:
   - icalendar.plug.js
diff --git a/deno.json b/deno.json
index b8c7f6f..c83ab5b 100644
--- a/deno.json
+++ b/deno.json
@@ -1,6 +1,6 @@
 {
   "name": "icalendar-plug",
-  "version": "0.4.2",
+  "version": "0.4.3",
   "nodeModulesDir": "auto",
   "tasks": {
     "sync-version": "deno run -A scripts/sync-version.ts",
diff --git a/icalendar.plug.yaml b/icalendar.plug.yaml
index 90b511c..9a4e421 100644
--- a/icalendar.plug.yaml
+++ b/icalendar.plug.yaml
@@ -1,5 +1,5 @@
 name: icalendar
-version: 0.4.2
+version: 0.4.3
 author: sstent
 index: icalendar.ts
 # Legacy SilverBullet permission name
diff --git a/icalendar.ts b/icalendar.ts
index 56eefc6..f7db918 100644
--- a/icalendar.ts
+++ b/icalendar.ts
@@ -3,7 +3,7 @@ import { convertIcsCalendar } from "https://esm.sh/ts-ics@2.4.0";
 import { RRule, RRuleSet } from "rrule";
 import { getUtcOffsetMs, resolveIanaName } from "./timezones.ts";
 
-const VERSION = "0.4.2";
+const VERSION = "0.4.3";
 const CACHE_KEY = "icalendar:lastSync";
 
 console.log(`[iCalendar] Plug script executing at top level (Version ${VERSION})`);
@@ -66,12 +66,12 @@ async function sha256Hash(str: string): Promise<string> {
 
 /**
  * Converts UTC Date to a specific timezone string
- * Uses Intl.DateTimeFormat to properly handle timezone conversion
+ * Uses toLocaleString for better compatibility
  */
 export function dateToTimezoneString(date: Date, timezone: string = "America/Los_Angeles"): string {
   try {
-    // Get date components in the target timezone
-    const formatter = new Intl.DateTimeFormat('en-US', {
+    // Use toLocaleString which has better worker support
+    const localeString = date.toLocaleString('en-US', {
       timeZone: timezone,
       year: 'numeric',
       month: '2-digit',
@@ -82,17 +82,16 @@ export function dateToTimezoneString(date: Date, timezone: string = "America/Los
       hour12: false
     });
     
-    const parts = formatter.formatToParts(date);
-    const values: Record<string, string> = {};
+    console.log(`[iCalendar] Converting ${date.toISOString()} to ${timezone}: ${localeString}`);
     
-    for (const part of parts) {
-      if (part.type !== 'literal') {
-        values[part.type] = part.value;
-      }
+    // Parse the result: "MM/DD/YYYY, HH:MM:SS"
+    const match = localeString.match(/(\d{2})\/(\d{2})\/(\d{4}),\s*(\d{2}):(\d{2}):(\d{2})/);
+    if (match) {
+      const [_, month, day, year, hour, minute, second] = match;
+      return `${year}-${month}-${day}T${hour}:${minute}:${second}`;
     }
     
-    // Format as ISO-like string: YYYY-MM-DDTHH:MM:SS
-    return `${values.year}-${values.month}-${values.day}T${values.hour}:${values.minute}:${values.second}`;
+    throw new Error("Failed to parse toLocaleString result");
   } catch (err) {
     console.error(`[iCalendar] Error converting to timezone ${timezone}:`, err);
     // Fallback to UTC
@@ -378,6 +377,12 @@ export async function syncCalendars() {
     if (sources.length === 0) return;
     
     console.log(`[iCalendar] Using display timezone: ${displayTimezone}`);
+    
+    // Test timezone conversion
+    const testDate = new Date("2026-02-21T14:00:00.000Z"); // 14:00 UTC
+    const converted = dateToTimezoneString(testDate, displayTimezone);
+    console.log(`[iCalendar] Timezone test: ${testDate.toISOString()} → ${converted} (should be 06:00 PST)`);
+    
     await editor.flashNotification("Syncing calendars...", "info");
     const allEvents: any[] = [];
     for (const source of sources) {