diff --git a/AsbCloudApp/Requests/SubsystemRequest.cs b/AsbCloudApp/Requests/SubsystemRequest.cs
index 23a7e70a..08b980ab 100644
--- a/AsbCloudApp/Requests/SubsystemRequest.cs
+++ b/AsbCloudApp/Requests/SubsystemRequest.cs
@@ -9,7 +9,7 @@ namespace AsbCloudApp.Requests
     /// </summary>
     public class SubsystemRequest: RequestBase, IValidatableObject
     {
-        private static readonly DateTime validationMinDate = new DateTime(2020,01,01,0,0,0,DateTimeKind.Utc);
+        private static readonly DateTimeOffset validationMinDate = new DateTimeOffset(2020,01,01,0,0,0, TimeSpan.Zero);
 
         /// <summary>
         /// идентификатор скважины
diff --git a/AsbCloudInfrastructure/Repository/FileRepository.cs b/AsbCloudInfrastructure/Repository/FileRepository.cs
index c4560116..2a203879 100644
--- a/AsbCloudInfrastructure/Repository/FileRepository.cs
+++ b/AsbCloudInfrastructure/Repository/FileRepository.cs
@@ -184,7 +184,7 @@ namespace AsbCloudInfrastructure.Repository
 
             var newFileMark = fileMarkDto.Adapt<FileMark>();
             newFileMark.Id = default;
-            newFileMark.DateCreated = DateTime.UtcNow;
+            newFileMark.DateCreated = DateTimeOffset.UtcNow;
             newFileMark.IdUser = idUser;
             newFileMark.User = null!;
 
@@ -244,7 +244,7 @@ namespace AsbCloudInfrastructure.Repository
                 IdAuthor = newItem.IdAuthor,
                 IdCategory = newItem.IdCategory,
                 Name = newItem.Name,
-                UploadDate = DateTime.UtcNow,
+                UploadDate = DateTimeOffset.UtcNow,
                 IsDeleted = false,
                 Size = newItem.Size,
             };
diff --git a/AsbCloudInfrastructure/Repository/TrajectoryEditableRepository.cs b/AsbCloudInfrastructure/Repository/TrajectoryEditableRepository.cs
index 667691b1..94c50ebf 100644
--- a/AsbCloudInfrastructure/Repository/TrajectoryEditableRepository.cs
+++ b/AsbCloudInfrastructure/Repository/TrajectoryEditableRepository.cs
@@ -115,7 +115,7 @@ namespace AsbCloudInfrastructure.Repository
         private static TEntity Convert(Tdto dto, double offsetHours)
         {
             var entity = dto.Adapt<TEntity>();
-            entity.UpdateDate = DateTime.Now.ToUtcDateTimeOffset(offsetHours);
+            entity.UpdateDate = DateTimeOffset.Now.ToOffset(TimeSpan.FromHours(offsetHours));
             return entity;
         }
     }