diff --git a/OctopathTraveler/BasicData.cs b/OctopathTraveler/BasicData.cs
index 08d1149..022bbad 100644
--- a/OctopathTraveler/BasicData.cs
+++ b/OctopathTraveler/BasicData.cs
@@ -73,8 +73,9 @@ public BasicData()
             {
                 gvas.AppendValue(address, false);
             }
-            SaveDate = new DateTime((int)gvas.ReadNumber("SaveDate_Year"), (int)gvas.ReadNumber("SaveDate_Month"), (int)gvas.ReadNumber("SaveDate_Day"),
-                (int)gvas.ReadNumber("SaveDate_Hour"), (int)gvas.ReadNumber("SaveDate_Minute"), (int)gvas.ReadNumber("SaveDate_Second")).ToString();
+            SaveDate = new DateTime((int)gvas.ReadNumberOrDefault("SaveDate_Year"), (int)gvas.ReadNumberOrDefault("SaveDate_Month"),
+                (int)gvas.ReadNumberOrDefault("SaveDate_Day"), (int)gvas.ReadNumberOrDefault("SaveDate_Hour"),
+                (int)gvas.ReadNumberOrDefault("SaveDate_Minute"), (int)gvas.ReadNumberOrDefault("SaveDate_Second")).ToString();
 
             gvas.AppendValue(Util.FindFirstAddress("PlayTime", soltDataAddress));
             var playTime = new TimeSpan(gvas.ReadNumber("PlayTime") * TimeSpan.TicksPerSecond);
diff --git a/OctopathTraveler/Util.cs b/OctopathTraveler/Util.cs
index b87a550..df800b0 100644
--- a/OctopathTraveler/Util.cs
+++ b/OctopathTraveler/Util.cs
@@ -33,5 +33,13 @@ public static uint ReadNumber(this GVAS gvas, string key)
 		{
 			return ReadNumber(gvas.Key(key));
 		}
+
+		public static uint ReadNumberOrDefault(this GVAS gvas, string key, uint defaultValue = default)
+		{
+			if (!gvas.HasKey(key))
+				return defaultValue;
+
+            return ReadNumber(gvas.Key(key));
+        }
 	}
 }