Merge branch 'master' into dev

# Conflicts:
#	.github/workflows/cd.yml
#	package.json
#	pnpm-lock.yaml
#	src/lib/date.ts
#	src/lib/schema.ts

src/lib/date.ts

@@ -103,9 +103,18 @@ export const DATE_FORMATS = {
   year: 'yyyy',
 };
 
+const TIMEZONE_MAPPINGS: Record<string, string> = {
+  'Asia/Calcutta': 'Asia/Kolkata',
+};
+
+export function normalizeTimezone(timezone: string): string {
+  return TIMEZONE_MAPPINGS[timezone] || timezone;
+}
+
 export function isValidTimezone(timezone: string) {
   try {
-    Intl.DateTimeFormat(undefined, { timeZone: timezone });
+    const normalizedTimezone = normalizeTimezone(timezone);
+    Intl.DateTimeFormat(undefined, { timeZone: normalizedTimezone });
     return true;
   } catch {
     return false;