should be it

external/duckdb/extension/icu/include/icu-helpers.hpp

@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//                         DuckDB
+//
+// icu-helpers.hpp
+//
+//
+//===----------------------------------------------------------------------===//
+
+#pragma once
+
+#include "duckdb.hpp"
+#include "unicode/timezone.h"
+#include "duckdb/common/types/timestamp.hpp"
+
+namespace duckdb {
+
+struct ICUHelpers {
+	//! Tries to get a time zone - returns nullptr if the timezone is not found
+	static unique_ptr<icu::TimeZone> TryGetTimeZone(string &tz_str);
+	//! Gets a time zone - throws an error if the timezone is not found
+	static unique_ptr<icu::TimeZone> GetTimeZone(string &tz_str, string *error_message = nullptr);
+
+	static TimestampComponents GetComponents(timestamp_tz_t ts, icu::Calendar *calendar);
+
+	static timestamp_t ToTimestamp(TimestampComponents data);
+};
+
+} // namespace duckdb