diff --git a/AsbCloudInfrastructure/Services/SAUB/MessageService.cs b/AsbCloudInfrastructure/Services/SAUB/MessageService.cs
index 17d92d8d..ea6cc79e 100644
--- a/AsbCloudInfrastructure/Services/SAUB/MessageService.cs
+++ b/AsbCloudInfrastructure/Services/SAUB/MessageService.cs
@@ -142,14 +142,13 @@ namespace AsbCloudInfrastructure.Services.SAUB
                 return Task.CompletedTask;
 
             var telemetry = telemetryService.GetOrCreateTelemetryByUid(uid);
-            var timezone = telemetryService.GetTimezone(telemetry.Id);
-
+            
             foreach (var dto in dtos)
             {
                 var entity = dto.Adapt<TelemetryMessage>();
                 entity.Id = 0;
                 entity.IdTelemetry = telemetry.Id;
-                entity.DateTime = dto.Date.ToOffset(TimeSpan.FromHours(timezone.Hours));
+                entity.DateTime = dto.Date.ToUniversalTime();
                 db.TelemetryMessages.Add(entity);
             }
 
diff --git a/AsbCloudWebApi.IntegrationTests/Clients/ITelemetryControllerClient.cs b/AsbCloudWebApi.IntegrationTests/Clients/ITelemetryControllerClient.cs
new file mode 100644
index 00000000..94f4293e
--- /dev/null
+++ b/AsbCloudWebApi.IntegrationTests/Clients/ITelemetryControllerClient.cs
@@ -0,0 +1,23 @@
+using AsbCloudApp.Data.SAUB;
+using Refit;
+
+namespace AsbCloudWebApi.IntegrationTests.Clients;
+public interface ITelemetryControllerClient
+{
+    private const string BaseRoute = "/api/telemetry";
+
+    [Get($"{BaseRoute}/Active")]
+    Task<IApiResponse> GetTelemetriesInfoByLastData(CancellationToken token);
+
+    [Post($"{BaseRoute}/{{uid}}/info")]
+    Task<IApiResponse> PostInfoAsync(string uid, [Body] TelemetryInfoDto info, CancellationToken token);
+
+    [Post($"{BaseRoute}/{{uid}}/message")]
+    Task<IApiResponse> PostMessagesAsync(string uid, [Body] IEnumerable<TelemetryMessageDto> dtos, CancellationToken token);
+
+    [Post($"{BaseRoute}/{{uid}}/event")]
+    Task<IApiResponse> PostEventsAsync(string uid, [Body] IEnumerable<EventDto> dtos, CancellationToken token);
+
+    [Post($"{BaseRoute}/{{uid}}/user")]
+    Task<IApiResponse> PostUsersAsync(string uid, [Body] IEnumerable<TelemetryUserDto> dtos, CancellationToken token);
+}
diff --git a/AsbCloudWebApi.IntegrationTests/Controllers/TelemetryControllerTest.cs b/AsbCloudWebApi.IntegrationTests/Controllers/TelemetryControllerTest.cs
new file mode 100644
index 00000000..e8abd06f
--- /dev/null
+++ b/AsbCloudWebApi.IntegrationTests/Controllers/TelemetryControllerTest.cs
@@ -0,0 +1,109 @@
+using AsbCloudApp.Data.SAUB;
+using AsbCloudDb.Model;
+using AsbCloudWebApi.IntegrationTests.Clients;
+using Xunit;
+
+namespace AsbCloudWebApi.IntegrationTests.Controllers;
+public class TelemetryControllerTest : BaseIntegrationTest
+{
+    private ITelemetryControllerClient client;
+    static readonly string uid = DateTime.UtcNow.ToString("yyyyMMdd_HHmmssfff");
+
+    private static readonly SimpleTimezone timezone = new() {TimezoneId = "a", Hours = 5 };
+    private static readonly Telemetry telemetry = new Telemetry() {Id = 1, RemoteUid = uid, TimeZone = timezone, Info = new() };
+    private readonly IEnumerable<EventDto> events = [new() { Id = 1, EventType = 1, IdCategory = 1, IdSound = 1, Message = "there is no spoon {tag1}", Tag = "tag1" }];
+    private readonly IEnumerable<TelemetryUserDto> users = [new TelemetryUserDto() { Id = 1, Level = 0, Name = "Neo", Patronymic = "Kianovich", Surname = "Theone" }];
+    private readonly IEnumerable<TelemetryMessageDto> messages = [new TelemetryMessageDto() { Id = 100, IdEvent = 1, WellDepth = 5, Date = DateTimeOffset.Now.ToOffset(TimeSpan.FromHours(5)), Arg0 = "3.14", IdTelemetryUser = 1 }];
+    private readonly IEnumerable<TelemetryDataSaub> telemetryDataSaubEntities = [new TelemetryDataSaub()
+    {
+        IdTelemetry = telemetry.Id,
+        DateTime = DateTimeOffset.UtcNow,
+        AxialLoad = 2,
+        WellDepth = 5,
+        BitDepth = 5,
+        BlockPosition = 5,
+        BlockSpeed = 5,    
+    }];
+
+    public TelemetryControllerTest(WebAppFactoryFixture factory)
+        : base(factory)
+    {
+        client = factory.GetAuthorizedHttpClient<ITelemetryControllerClient>(string.Empty);
+    }
+
+    [Fact]
+    public async Task GetTelemetriesInfoByLastData()
+    {
+        // Arrange
+        dbContext.CleanupDbSet<Telemetry>();
+        dbContext.Set<Telemetry>().Add(telemetry);
+        dbContext.Set<TelemetryDataSaub>().AddRange(telemetryDataSaubEntities);
+        dbContext.SaveChanges();
+
+        // Act
+        var response = await client.GetTelemetriesInfoByLastData(CancellationToken.None);
+
+        // Assert
+        Assert.Equal(System.Net.HttpStatusCode.OK, response.StatusCode);
+    }
+
+    [Fact]
+    public async Task PostUsersAsync()
+    {
+        // arrange
+        dbContext.CleanupDbSet<Telemetry>();
+
+        // act
+        var response = await client.PostUsersAsync(uid, users, CancellationToken.None);
+
+        // Assert
+        Assert.Equal(System.Net.HttpStatusCode.OK, response.StatusCode);
+        var telemetriesCount = dbContext.Set<Telemetry>().Count();
+        var telemetryUserCount = dbContext.Set<TelemetryUser>().Count();
+
+        Assert.Equal(1, telemetriesCount);
+        Assert.Equal(1, telemetryUserCount);
+    }
+
+    [Fact]
+    public async Task PostEventsAsync()
+    {
+        // arrange
+        dbContext.CleanupDbSet<Telemetry>();
+
+        // act
+        var response = await client.PostEventsAsync(uid, events, CancellationToken.None);
+
+        // Assert
+        Assert.Equal(System.Net.HttpStatusCode.OK, response.StatusCode);
+        var telemetriesCount = dbContext.Set<Telemetry>().Count();
+        var telemetryEventCount = dbContext.Set<TelemetryEvent>().Count();
+
+        Assert.Equal(1, telemetriesCount);
+        Assert.Equal(1, telemetryEventCount);
+    }
+
+    [Fact]
+    public async Task PostMessagesAsync()
+    {
+        // arrange
+        dbContext.CleanupDbSet<Telemetry>();
+
+        // act
+        _ = await client.PostEventsAsync(uid, events, CancellationToken.None);
+        _ = await client.PostUsersAsync(uid, users, CancellationToken.None);
+        var response = await client.PostMessagesAsync(uid, messages, CancellationToken.None);
+
+        // Assert
+        Assert.Equal(System.Net.HttpStatusCode.OK, response.StatusCode);
+        var telemetriesCount = dbContext.Set<Telemetry>().Count();
+        var telemetryEventCount = dbContext.Set<TelemetryEvent>().Count();
+        var telemetryUserCount = dbContext.Set<TelemetryUser>().Count();
+        var telemetryMessageCount = dbContext.Set<TelemetryMessage>().Count();
+
+        Assert.Equal(1, telemetriesCount);
+        Assert.Equal(1, telemetryEventCount);
+        Assert.Equal(1, telemetryUserCount);
+        Assert.Equal(1, telemetryMessageCount);
+    }
+}