@@ -20,7 +20,7 @@ namespace Apache.Arrow
 {
     public class Date32Array : PrimitiveArray<int>
     {
-        private const int MillisecondsPerDay = 86400000;
+        private const long MillisecondsPerDay = 86400000;
 
         public class Builder : PrimitiveArrayBuilder<DateTimeOffset, int, Date32Array, Builder>
         {
 
@@ -0,0 +1,42 @@
+// Licensed to the Apache Software Foundation (ASF) under one or more
+// contributor license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright ownership.
+// The ASF licenses this file to You under the Apache License, Version 2.0
+// (the "License"); you may not use this file except in compliance with
+// the License.  You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using Xunit;
+
+namespace Apache.Arrow.Tests
+{
+    public class Date32ArrayTests
+    {
+        public class Set
+        {
+            [Fact]
+            public void SetAndGet()
+            {
+                var now = DateTimeOffset.UtcNow;
+
+                // throw away the time portion of the date time
+                var expected = new DateTime(now.Year, now.Month, now.Day);
+
+                var array = new Date32Array.Builder()
+                    .Resize(1)
+                    .Set(0, expected)
+                    .Build();
+
+                Assert.Equal(expected, array.GetDate(0).Value.Date);
+            }
+        }
+    }
+}
Original file line number	Diff line number	Diff line change
`@@ -20,7 +20,7 @@ namespace Apache.Arrow`
`20`	`20`	`{`
`21`	`21`	`public class Date32Array : PrimitiveArray<int>`
`22`	`22`	`{`
`23`		`- private const int MillisecondsPerDay = 86400000;`
	`23`	`+ private const long MillisecondsPerDay = 86400000;`
`24`	`24`
`25`	`25`	`public class Builder : PrimitiveArrayBuilder<DateTimeOffset, int, Date32Array, Builder>`
`26`	`26`	`{`