diff --git a/src/Umbraco.Core/DateTimeExtensions.cs b/src/Umbraco.Core/DateTimeExtensions.cs
index 6e2676ac72..8332fb9356 100644
--- a/src/Umbraco.Core/DateTimeExtensions.cs
+++ b/src/Umbraco.Core/DateTimeExtensions.cs
@@ -21,9 +21,9 @@ namespace Umbraco.Core
         public static DateTime TruncateTo(this DateTime dt, DateTruncate truncateTo)
         {
             if (truncateTo == DateTruncate.Year)
-                return new DateTime(dt.Year, 0, 0);
+                return new DateTime(dt.Year, 1, 1);
             if (truncateTo == DateTruncate.Month)
-                return new DateTime(dt.Year, dt.Month, 0);
+                return new DateTime(dt.Year, dt.Month, 1);
             if (truncateTo == DateTruncate.Day)
                 return new DateTime(dt.Year, dt.Month, dt.Day);
             if (truncateTo == DateTruncate.Hour)
@@ -41,43 +41,43 @@ namespace Umbraco.Core
             Hour,
             Minute,
             Second
-        }
-
+        }
+
         /// <summary>
-        /// Calculates the number of minutes from a date time, on a rolling daily basis (so if 
+        /// Calculates the number of minutes from a date time, on a rolling daily basis (so if 
         /// date time is before the time, calculate onto next day)
         /// </summary>
         /// <param name="fromDateTime">Date to start from</param>
         /// <param name="scheduledTime">Time to compare against (in Hmm form, e.g. 330, 2200)</param>
-        /// <returns></returns>
-        public static int PeriodicMinutesFrom(this DateTime fromDateTime, string scheduledTime)
-        {
-            // Ensure time provided is 4 digits long
-            if (scheduledTime.Length == 3)
-            {
-                scheduledTime = "0" + scheduledTime;
-            }
-
-            var scheduledHour = int.Parse(scheduledTime.Substring(0, 2));
-            var scheduledMinute = int.Parse(scheduledTime.Substring(2));
-
-            DateTime scheduledDateTime;
-            if (IsScheduledInRemainingDay(fromDateTime, scheduledHour, scheduledMinute))
-            {
-                scheduledDateTime = new DateTime(fromDateTime.Year, fromDateTime.Month, fromDateTime.Day, scheduledHour, scheduledMinute, 0);
-            }
-            else
-            {
-                var nextDay = fromDateTime.AddDays(1);
-                scheduledDateTime = new DateTime(nextDay.Year, nextDay.Month, nextDay.Day, scheduledHour, scheduledMinute, 0);
-            }
-
-            return (int)(scheduledDateTime - fromDateTime).TotalMinutes;
-        }
-
-        private static bool IsScheduledInRemainingDay(DateTime fromDateTime, int scheduledHour, int scheduledMinute)
-        {
-            return scheduledHour > fromDateTime.Hour || (scheduledHour == fromDateTime.Hour && scheduledMinute >= fromDateTime.Minute);
+        /// <returns></returns>
+        public static int PeriodicMinutesFrom(this DateTime fromDateTime, string scheduledTime)
+        {
+            // Ensure time provided is 4 digits long
+            if (scheduledTime.Length == 3)
+            {
+                scheduledTime = "0" + scheduledTime;
+            }
+
+            var scheduledHour = int.Parse(scheduledTime.Substring(0, 2));
+            var scheduledMinute = int.Parse(scheduledTime.Substring(2));
+
+            DateTime scheduledDateTime;
+            if (IsScheduledInRemainingDay(fromDateTime, scheduledHour, scheduledMinute))
+            {
+                scheduledDateTime = new DateTime(fromDateTime.Year, fromDateTime.Month, fromDateTime.Day, scheduledHour, scheduledMinute, 0);
+            }
+            else
+            {
+                var nextDay = fromDateTime.AddDays(1);
+                scheduledDateTime = new DateTime(nextDay.Year, nextDay.Month, nextDay.Day, scheduledHour, scheduledMinute, 0);
+            }
+
+            return (int)(scheduledDateTime - fromDateTime).TotalMinutes;
+        }
+
+        private static bool IsScheduledInRemainingDay(DateTime fromDateTime, int scheduledHour, int scheduledMinute)
+        {
+            return scheduledHour > fromDateTime.Hour || (scheduledHour == fromDateTime.Hour && scheduledMinute >= fromDateTime.Minute);
         }
     }
 }