diff --git a/velox/functions/sparksql/DateTimeFunctions.h b/velox/functions/sparksql/DateTimeFunctions.h
index b951e40d797a..eb5c321a254f 100644
--- a/velox/functions/sparksql/DateTimeFunctions.h
+++ b/velox/functions/sparksql/DateTimeFunctions.h
@@ -505,7 +505,7 @@ struct WeekdayFunction {
 
   // 0 = Monday, 1 = Tuesday, ..., 6 = Sunday
   FOLLY_ALWAYS_INLINE int32_t getWeekday(const std::tm& time) {
-    return (time.tm_wday - 6) % 7;
+    return (time.tm_wday + 6) % 7;
   }
 
   FOLLY_ALWAYS_INLINE void call(int32_t& result, const arg_type<Date>& date) {