diff --git a/PKHeX/MysteryGifts/PGF.cs b/PKHeX/MysteryGifts/PGF.cs
index 06bab3020..7645a89bc 100644
--- a/PKHeX/MysteryGifts/PGF.cs
+++ b/PKHeX/MysteryGifts/PGF.cs
@@ -102,7 +102,7 @@ public override string CardTitle
             get
             {
                 // Check to see if date is valid
-                if (!Util.IsDateValid(Year, Month, Day))
+                if (!Util.IsDateValid(2000 + Year, Month, Day))
                 {
                     return null;
                 }
diff --git a/PKHeX/MysteryGifts/WC6.cs b/PKHeX/MysteryGifts/WC6.cs
index 7ce7850ce..3774d5d78 100644
--- a/PKHeX/MysteryGifts/WC6.cs
+++ b/PKHeX/MysteryGifts/WC6.cs
@@ -52,7 +52,7 @@ public WC6(byte[] data = null)
             get
             {
                 // Check to see if date is valid
-                if (!Util.IsDateValid(Year, Month, Day))
+                if (!Util.IsDateValid(2000 + Year, Month, Day))
                 {
                     return null;
                 }
diff --git a/PKHeX/PKM/PKM.cs b/PKHeX/PKM/PKM.cs
index e94d84d39..3008f6e80 100644
--- a/PKHeX/PKM/PKM.cs
+++ b/PKHeX/PKM/PKM.cs
@@ -141,7 +141,7 @@ public byte[] Write()
             get
             {
                 // Check to see if date is valid
-                if (!Util.IsDateValid(Met_Year, Met_Month, Met_Day))
+                if (!Util.IsDateValid(2000 + Met_Year, Met_Month, Met_Day))
                 {
                     return null;
                 }
@@ -186,7 +186,7 @@ public byte[] Write()
             get
             {
                 // Check to see if date is valid
-                if (!Util.IsDateValid(Egg_Year, Egg_Month, Egg_Day))
+                if (!Util.IsDateValid(2000 + Egg_Year, Egg_Month, Egg_Day))
                 {
                     return null;
                 }
diff --git a/PKHeX/Util/DateUtil.cs b/PKHeX/Util/DateUtil.cs
index c7edda0ae..0cff93c7f 100644
--- a/PKHeX/Util/DateUtil.cs
+++ b/PKHeX/Util/DateUtil.cs
@@ -16,7 +16,7 @@ public static partial class Util
         /// <returns>A boolean indicating whether or not the date is valid.</returns>
         public static bool IsDateValid(int year, int month, int day)
         {
-            return !(year < 0 || year > DateTime.MaxValue.Year || month < 1 || month > 12 || day < 1 || day > DateTime.DaysInMonth(year, month));
+            return !(year <= 0 || year > DateTime.MaxValue.Year || month < 1 || month > 12 || day < 1 || day > DateTime.DaysInMonth(year, month));
         }
 
         /// <summary>
diff --git a/Tests/PKHeX.Tests/PKM/PKMTests.cs b/Tests/PKHeX.Tests/PKM/PKMTests.cs
index 37f394d7a..172511e7b 100644
--- a/Tests/PKHeX.Tests/PKM/PKMTests.cs
+++ b/Tests/PKHeX.Tests/PKM/PKMTests.cs
@@ -22,13 +22,19 @@ public void MetDateGetterTest()
             pk.MetDay = 0;
             pk.MetMonth = 0;
             pk.MetYear = 0;
-            Assert.IsFalse(pk.MetDate.HasValue, "MetDate should be null when date components are all 0.");
+            Assert.IsFalse(pk.MetDate.HasValue, "MetDate should be null when date components are all 0.");           
 
             // Ensure MetDate gives correct date
             pk.MetDay = 10;
             pk.MetMonth = 8;
             pk.MetYear = 16;
             Assert.AreEqual(new DateTime(2016, 8, 10).Date, pk.MetDate.Value.Date, "Met date does not return correct date.");
+
+            // Ensure 0 year is calculated correctly
+            pk.MetDay = 1;
+            pk.MetMonth = 1;
+            pk.MetYear = 0;
+            Assert.AreEqual(2000, pk.MetDate.Value.Date.Year, "Year is not calculated correctly.");
         }
 
         [TestMethod]
diff --git a/Tests/PKHeX.Tests/Util/DateUtilTests.cs b/Tests/PKHeX.Tests/Util/DateUtilTests.cs
index 4356003de..002bfb1dd 100644
--- a/Tests/PKHeX.Tests/Util/DateUtilTests.cs
+++ b/Tests/PKHeX.Tests/Util/DateUtilTests.cs
@@ -101,6 +101,13 @@ public void FailsWithZeroMonth()
             Assert.IsFalse(PKHeX.Util.IsDateValid(2000, 0, 1));
         }
 
+        [TestMethod]
+        [TestCategory(DateUtilCategory)]
+        public void FailsWithZeroYear()
+        {
+            Assert.IsFalse(PKHeX.Util.IsDateValid(0, 1, 1));
+        }
+
         [TestMethod]
         [TestCategory(DateUtilCategory)]
         public void TestUIntOverload()