diff --git a/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs b/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs
index 07146882..b1756101 100644
--- a/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs
+++ b/AsbCloudInfrastructure/Services/WellOperationService/OperationsStatService.cs
@@ -431,6 +431,10 @@ public class OperationsStatService : IOperationsStatService
         int? iLastMatch = null;
         int iLastFact = 0;
         var nptHours = 0d;
+
+        DateTimeOffset? firstDateStartFact = Fact!.DateStart;
+        DateTimeOffset? firstDateStartPlan = Plan?.DateStart;
+
         for (int i = 0; i < wellOperations.Length; i++)
         {
             var item = wellOperations[i];
@@ -441,7 +445,13 @@ public class OperationsStatService : IOperationsStatService
             if (plan is not null)
             {
                 planFactPredict.Plan = Convert(plan, tzOffsetHours);
-                planFactPredict.Plan.Day = (planFactPredict.Plan.DateStart - dateStart).TotalDays;
+                
+                if (!firstDateStartPlan.HasValue) {
+                    firstDateStartPlan = planFactPredict.Plan.DateStart;
+                }
+
+                planFactPredict.Plan.Day = (planFactPredict.Plan.DateStart - firstDateStartPlan.Value).TotalDays;
+                
                 if (fact is not null)
                     iLastMatch = i;
             }
@@ -451,8 +461,9 @@ public class OperationsStatService : IOperationsStatService
                 if(WellOperationCategory.NonProductiveTimeSubIds.Contains(fact.IdCategory))
                     nptHours += fact.DurationHours;
 
-                planFactPredict.Fact = Convert(fact, tzOffsetHours);
-                planFactPredict.Fact.Day = (planFactPredict.Fact.DateStart - dateStart).TotalDays;
+                planFactPredict.Fact = Convert(fact, tzOffsetHours);               
+                planFactPredict.Fact.Day = (planFactPredict.Fact.DateStart - firstDateStartFact.Value).TotalDays;
+                
                 planFactPredict.Fact.NptHours = nptHours;
                 iLastFact = i;
             }