diff --git a/Outlook2013TodoAddIn/AppointmentsControl.cs b/Outlook2013TodoAddIn/AppointmentsControl.cs
index 2fd0842..09e7353 100644
--- a/Outlook2013TodoAddIn/AppointmentsControl.cs
+++ b/Outlook2013TodoAddIn/AppointmentsControl.cs
@@ -55,6 +55,11 @@ namespace Outlook2013TodoAddIn
         /// </summary>
         public bool ShowTasks { get; set; }
 
+        /// <summary>
+        /// Gets/sets the first day of the week for the calendar
+        /// </summary>
+        public System.DayOfWeek FirstDayOfWeek { get; set; }
+
         #endregion "Properties"
 
         #region "Methods"
@@ -82,6 +87,7 @@ namespace Outlook2013TodoAddIn
         /// </summary>
         public void RetrieveData()
         {
+            this.apptCalendar.FirstDayOfWeek = this.FirstDayOfWeek;
             this.RetrieveAppointments();
             if (this.ShowTasks)
             {
@@ -438,6 +444,7 @@ namespace Outlook2013TodoAddIn
                     this.Accounts = cfg.Accounts;
                     this.ShowFriendlyGroupHeaders = cfg.ShowFriendlyGroupHeaders;
                     this.ShowTasks = cfg.ShowTasks;
+                    this.FirstDayOfWeek = cfg.FirstDayOfWeek;
                     this.RetrieveData();
                 }
             }
diff --git a/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs b/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs
index bf54685..85a79ba 100644
--- a/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs
+++ b/Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs
@@ -38,6 +38,8 @@
             this.lblAccounts = new System.Windows.Forms.Label();
             this.chkFriendlyGroupHeaders = new System.Windows.Forms.CheckBox();
             this.chkShowTasks = new System.Windows.Forms.CheckBox();
+            this.cboFirstDayOfWeek = new System.Windows.Forms.ComboBox();
+            this.lblFirstDayOfWeek = new System.Windows.Forms.Label();
             ((System.ComponentModel.ISupportInitialize)(this.numRangeDays)).BeginInit();
             this.SuspendLayout();
             // 
@@ -85,7 +87,7 @@
             // btnCancel
             // 
             this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
-            this.btnCancel.Location = new System.Drawing.Point(168, 314);
+            this.btnCancel.Location = new System.Drawing.Point(168, 374);
             this.btnCancel.Name = "btnCancel";
             this.btnCancel.Size = new System.Drawing.Size(87, 37);
             this.btnCancel.TabIndex = 11;
@@ -95,7 +97,7 @@
             // btnOK
             // 
             this.btnOK.DialogResult = System.Windows.Forms.DialogResult.OK;
-            this.btnOK.Location = new System.Drawing.Point(26, 314);
+            this.btnOK.Location = new System.Drawing.Point(26, 374);
             this.btnOK.Name = "btnOK";
             this.btnOK.Size = new System.Drawing.Size(87, 37);
             this.btnOK.TabIndex = 10;
@@ -116,7 +118,7 @@
             // chkListCalendars
             // 
             this.chkListCalendars.FormattingEnabled = true;
-            this.chkListCalendars.Location = new System.Drawing.Point(26, 199);
+            this.chkListCalendars.Location = new System.Drawing.Point(26, 259);
             this.chkListCalendars.Name = "chkListCalendars";
             this.chkListCalendars.Size = new System.Drawing.Size(229, 106);
             this.chkListCalendars.TabIndex = 13;
@@ -124,7 +126,7 @@
             // lblAccounts
             // 
             this.lblAccounts.AutoSize = true;
-            this.lblAccounts.Location = new System.Drawing.Point(23, 179);
+            this.lblAccounts.Location = new System.Drawing.Point(23, 239);
             this.lblAccounts.Name = "lblAccounts";
             this.lblAccounts.Size = new System.Drawing.Size(70, 17);
             this.lblAccounts.TabIndex = 14;
@@ -150,13 +152,33 @@
             this.chkShowTasks.Text = "Show Tasks";
             this.chkShowTasks.UseVisualStyleBackColor = true;
             // 
+            // cboFirstDayOfWeek
+            // 
+            this.cboFirstDayOfWeek.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+            this.cboFirstDayOfWeek.FormattingEnabled = true;
+            this.cboFirstDayOfWeek.Location = new System.Drawing.Point(45, 201);
+            this.cboFirstDayOfWeek.Name = "cboFirstDayOfWeek";
+            this.cboFirstDayOfWeek.Size = new System.Drawing.Size(186, 24);
+            this.cboFirstDayOfWeek.TabIndex = 17;
+            // 
+            // lblFirstDayOfWeek
+            // 
+            this.lblFirstDayOfWeek.AutoSize = true;
+            this.lblFirstDayOfWeek.Location = new System.Drawing.Point(42, 181);
+            this.lblFirstDayOfWeek.Name = "lblFirstDayOfWeek";
+            this.lblFirstDayOfWeek.Size = new System.Drawing.Size(124, 17);
+            this.lblFirstDayOfWeek.TabIndex = 18;
+            this.lblFirstDayOfWeek.Text = "First Day of Week:";
+            // 
             // FormConfiguration
             // 
             this.AcceptButton = this.btnOK;
             this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.CancelButton = this.btnCancel;
-            this.ClientSize = new System.Drawing.Size(282, 383);
+            this.ClientSize = new System.Drawing.Size(282, 452);
+            this.Controls.Add(this.lblFirstDayOfWeek);
+            this.Controls.Add(this.cboFirstDayOfWeek);
             this.Controls.Add(this.chkShowTasks);
             this.Controls.Add(this.chkFriendlyGroupHeaders);
             this.Controls.Add(this.lblAccounts);
@@ -193,5 +215,7 @@
         private System.Windows.Forms.Label lblAccounts;
         private System.Windows.Forms.CheckBox chkFriendlyGroupHeaders;
         private System.Windows.Forms.CheckBox chkShowTasks;
+        private System.Windows.Forms.ComboBox cboFirstDayOfWeek;
+        private System.Windows.Forms.Label lblFirstDayOfWeek;
     }
 }
\ No newline at end of file
diff --git a/Outlook2013TodoAddIn/Forms/FormConfiguration.cs b/Outlook2013TodoAddIn/Forms/FormConfiguration.cs
index e703455..57e1c43 100644
--- a/Outlook2013TodoAddIn/Forms/FormConfiguration.cs
+++ b/Outlook2013TodoAddIn/Forms/FormConfiguration.cs
@@ -76,6 +76,15 @@ namespace Outlook2013TodoAddIn.Forms
             set { this.chkShowTasks.Checked = value; }
         }
 
+        /// <summary>
+        /// Gets/sets the first day of the week for the calendar
+        /// </summary>
+        public System.DayOfWeek FirstDayOfWeek
+        {
+            get { return (System.DayOfWeek)Enum.Parse(typeof(System.DayOfWeek), this.cboFirstDayOfWeek.SelectedValue.ToString()); }
+            set { this.cboFirstDayOfWeek.SelectedValue = value; }
+        }
+
         #endregion "Properties"
         
         #region "Methods"
@@ -101,6 +110,7 @@ namespace Outlook2013TodoAddIn.Forms
             this.chkFriendlyGroupHeaders.Checked = Properties.Settings.Default.ShowFriendlyGroupHeaders;
             this.chkShowTasks.Checked = Properties.Settings.Default.ShowTasks;
             this.LoadStores();
+            this.LoadDays();
         }
 
         /// <summary>
@@ -116,6 +126,15 @@ namespace Outlook2013TodoAddIn.Forms
             }
         }
 
+        /// <summary>
+        /// Loads the available days of the week in the dropdown
+        /// </summary>
+        private void LoadDays()
+        {
+            this.cboFirstDayOfWeek.DataSource = Enum.GetValues(typeof(System.DayOfWeek));
+            this.cboFirstDayOfWeek.SelectedItem = Properties.Settings.Default.FirstDayOfWeek;
+        }
+
         /// <summary>
         /// Clicking the OK button
         /// </summary>
@@ -129,6 +148,7 @@ namespace Outlook2013TodoAddIn.Forms
             Properties.Settings.Default.Accounts = this.Accounts;
             Properties.Settings.Default.ShowFriendlyGroupHeaders = this.chkFriendlyGroupHeaders.Checked;
             Properties.Settings.Default.ShowTasks = this.chkShowTasks.Checked;
+            Properties.Settings.Default.FirstDayOfWeek = (System.DayOfWeek)Enum.Parse(typeof(System.DayOfWeek), this.cboFirstDayOfWeek.SelectedValue.ToString());
         }
 
         #endregion "Methods"
diff --git a/Outlook2013TodoAddIn/Properties/Settings.Designer.cs b/Outlook2013TodoAddIn/Properties/Settings.Designer.cs
index 2ce36a6..a642b45 100644
--- a/Outlook2013TodoAddIn/Properties/Settings.Designer.cs
+++ b/Outlook2013TodoAddIn/Properties/Settings.Designer.cs
@@ -129,5 +129,17 @@ namespace Outlook2013TodoAddIn.Properties {
                 this["ShowTasks"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("Sunday")]
+        public global::System.DayOfWeek FirstDayOfWeek {
+            get {
+                return ((global::System.DayOfWeek)(this["FirstDayOfWeek"]));
+            }
+            set {
+                this["FirstDayOfWeek"] = value;
+            }
+        }
     }
 }
diff --git a/Outlook2013TodoAddIn/Properties/Settings.settings b/Outlook2013TodoAddIn/Properties/Settings.settings
index 853dd48..0b8224a 100644
--- a/Outlook2013TodoAddIn/Properties/Settings.settings
+++ b/Outlook2013TodoAddIn/Properties/Settings.settings
@@ -29,5 +29,8 @@
     <Setting Name="ShowTasks" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">True</Value>
     </Setting>
+    <Setting Name="FirstDayOfWeek" Type="System.DayOfWeek" Scope="User">
+      <Value Profile="(Default)">Sunday</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file
diff --git a/Outlook2013TodoAddIn/ThisAddIn.cs b/Outlook2013TodoAddIn/ThisAddIn.cs
index 568872a..f4cf2c7 100644
--- a/Outlook2013TodoAddIn/ThisAddIn.cs
+++ b/Outlook2013TodoAddIn/ThisAddIn.cs
@@ -45,6 +45,7 @@ namespace Outlook2013TodoAddIn
             this.AppControl.Accounts = Properties.Settings.Default.Accounts;
             this.AppControl.ShowFriendlyGroupHeaders = Properties.Settings.Default.ShowFriendlyGroupHeaders;
             this.AppControl.ShowTasks = Properties.Settings.Default.ShowTasks;
+            this.AppControl.FirstDayOfWeek = Properties.Settings.Default.FirstDayOfWeek;
             this.AppControl.NumDays = Properties.Settings.Default.NumDays; // Setting the value will load the appointments
             
             ToDoTaskPane = this.CustomTaskPanes.Add(this.AppControl, "Appointments");
diff --git a/Outlook2013TodoAddIn/app.config b/Outlook2013TodoAddIn/app.config
index bcdff4c..506b707 100644
--- a/Outlook2013TodoAddIn/app.config
+++ b/Outlook2013TodoAddIn/app.config
@@ -31,6 +31,9 @@
       <setting name="ShowTasks" serializeAs="String">
         <value>True</value>
       </setting>
+      <setting name="FirstDayOfWeek" serializeAs="String">
+        <value>Sunday</value>
+      </setting>
     </Outlook2013TodoAddIn.Properties.Settings>
   </userSettings>
 <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>