diff --git a/Runtime/Utilities/DateTimeUtil.cs b/Runtime/Utilities/DateTimeUtil.cs
index 7c14cfe5..c47ae94d 100644
--- a/Runtime/Utilities/DateTimeUtil.cs
+++ b/Runtime/Utilities/DateTimeUtil.cs
@@ -6,8 +6,7 @@ namespace XCharts.Runtime
 {
     public static class DateTimeUtil
     {
-        //private static readonly DateTime k_DateTime1970 = TimeZoneInfo.ConvertTime(new DateTime(1970, 1, 1), TimeZoneInfo.Local);
-        private static readonly DateTime k_DateTime1970 = new DateTime(1970, 1, 1);
+        private static readonly DateTime k_DateTime1970 = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
         public static readonly int ONE_SECOND = 1;
         public static readonly int ONE_MINUTE = ONE_SECOND * 60;
         public static readonly int ONE_HOUR = ONE_MINUTE * 60;
@@ -34,10 +33,21 @@ namespace XCharts.Runtime
             return (int)(time - k_DateTime1970).TotalSeconds;
         }
 
+        public static int GetTimestamp(string dateTime)
+        {
+            try
+            {
+                return GetTimestamp(DateTime.Parse(dateTime));
+            }
+            catch (Exception e)
+            {
+                throw e;
+            }
+        }
+
         public static DateTime GetDateTime(int timestamp)
         {
-            long span = ((long)timestamp) * 10000000;
-            return k_DateTime1970.Add(new TimeSpan(span));
+            return k_DateTime1970.AddSeconds(timestamp);
         }
 
         internal static string GetDateTimeFormatString(DateTime dateTime, double range)