diff --git a/csharp/App/SaliMax/src/SystemConfig/Config.cs b/csharp/App/SaliMax/src/SystemConfig/Config.cs
index 4c1981b0f..713bc3a0d 100644
--- a/csharp/App/SaliMax/src/SystemConfig/Config.cs
+++ b/csharp/App/SaliMax/src/SystemConfig/Config.cs
@@ -11,11 +11,13 @@ namespace InnovEnergy.App.SaliMax.SystemConfig;
 public class Config //TODO: let IE choose from config files (Json) and connect to GUI
 {
     private static String DefaultConfigFilePath => Path.Combine(Environment.CurrentDirectory, "config.json");
-
+    private static DateTime DefaultDatetime => new(2024, 03, 11, 09, 00, 00); 
+    
     private static readonly JsonSerializerOptions JsonOptions = new() { WriteIndented = true };
 
     public required Double                MinSoc                         { get; set; } 
     public required CalibrationChargeType ForceCalibrationCharge         { get; set; } 
+    public required DateTime              DayAndTimeForCalibration       { get; set; } 
     public required Boolean               DisplayIndividualBatteries     { get; set; } 
     public required Double                PConstant                      { get; set; } 
     public required Double                GridSetPoint                   { get; set; } 
@@ -40,7 +42,8 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
     public static Config Default => new()
     {
         MinSoc                         = 20,
-        ForceCalibrationCharge         =  CalibrationChargeType.RepetitivelyEvery,   
+        ForceCalibrationCharge         = CalibrationChargeType.RepetitivelyEvery,  
+        DayAndTimeForCalibration       = DefaultDatetime,
         DisplayIndividualBatteries     = false,
         PConstant                      = .5,
         GridSetPoint                   = 0,
@@ -118,6 +121,7 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
     {
         MinSoc                               = 20,
         ForceCalibrationCharge               = CalibrationChargeType.RepetitivelyEvery,
+        DayAndTimeForCalibration             = DefaultDatetime,
         DisplayIndividualBatteries           = false,
         PConstant                            = .5,
         GridSetPoint                         = 0,