diff --git a/ecmascript/js_date_time_format.cpp b/ecmascript/js_date_time_format.cpp
index 15a861bdcfea43d03ebd96c6db8cc20e41205f6a..a70ed8702897116033a8f8bbf7f18e80d85e49c8 100644
--- a/ecmascript/js_date_time_format.cpp
+++ b/ecmascript/js_date_time_format.cpp
@@ -46,7 +46,7 @@ struct CommonDateFormatPart {
 };
 
 namespace {
-const std::vector<std::string> ICU_LONG_SHORT = {"long", "short"};
+const std::vector<std::string> ICU_LONG_SHORT = {"long", "short", "longOffset", "shortOffset", "longGeneric", "shortGeneric"};
 const std::vector<std::string> ICU_NARROW_LONG_SHORT = {"narrow", "long", "short"};
 const std::vector<std::string> ICU2_DIGIT_NUMERIC = {"2-digit", "numeric"};
 const std::vector<std::string> ICU_NARROW_LONG_SHORT2_DIGIT_NUMERIC = {"narrow", "long", "short", "2-digit", "numeric"};
@@ -71,7 +71,11 @@ const std::vector<IcuPatternEntry> ICU_HOUR_PE = {
 };
 const std::vector<IcuPatternEntry> ICU_MINUTE_PE = {{"mm", "2-digit"}, {"m", "numeric"}};
 const std::vector<IcuPatternEntry> ICU_SECOND_PE = {{"ss", "2-digit"}, {"s", "numeric"}};
-const std::vector<IcuPatternEntry> ICU_YIME_ZONE_NAME_PE = {{"zzzz", "long"}, {"z", "short"}};
+const std::vector<IcuPatternEntry> ICU_YIME_ZONE_NAME_PE = {
+    {"zzzz", "long"}, {"z", "short"},
+    {"OOOO", "longOffset"}, {"O", "shortOffset"},
+    {"vvvv", "longGeneric"}, {"v", "shortGeneric"}
+};
 
 const std::map<char16_t, HourCycleOption> HOUR_CYCLE_MAP = {
     {'K', HourCycleOption::H11},