diff --git a/AsbCloudApp/Services/ITimeZoneService.cs b/AsbCloudApp/Services/ITimeZoneService.cs
index 3eae4ca7..55e18a6a 100644
--- a/AsbCloudApp/Services/ITimeZoneService.cs
+++ b/AsbCloudApp/Services/ITimeZoneService.cs
@@ -15,7 +15,7 @@ namespace AsbCloudApp.Services
         /// <param name="latitude"></param>
         /// <param name="longitude"></param>
         /// <returns></returns>
-        SimpleTimezoneDto GetByCoordinates(double latitude, double longitude);
+        SimpleTimezoneDto? GetOrDefaultByCoordinates(double latitude, double longitude);
 
         /// <summary>
         /// по координатам
@@ -24,6 +24,6 @@ namespace AsbCloudApp.Services
         /// <param name="longitude"></param>
         /// <param name="token"></param>
         /// <returns></returns>
-        Task<Data.SimpleTimezoneDto> GetByCoordinatesAsync(double latitude, double longitude, CancellationToken token);
+        Task<Data.SimpleTimezoneDto?> GetOrDefaultByCoordinatesAsync(double latitude, double longitude, CancellationToken token);
     }
 }
\ No newline at end of file
diff --git a/AsbCloudInfrastructure/Services/TimeZoneService.cs b/AsbCloudInfrastructure/Services/TimeZoneService.cs
index a4f4f0e3..083e8d52 100644
--- a/AsbCloudInfrastructure/Services/TimeZoneService.cs
+++ b/AsbCloudInfrastructure/Services/TimeZoneService.cs
@@ -11,26 +11,26 @@ namespace AsbCloudInfrastructure.Services
     {
         private class TimeZoneInfo
         {
-            public string Sunrise { get; set; }
+            public string? Sunrise { get; set; }
             public double Lng { get; set; }
             public double Lat { get; set; }
-            public string CountryCode { get; set; }
+            public string? CountryCode { get; set; }
             public double GmtOffset { get; set; }
             public double RawOffset { get; set; }
-            public string Sunset { get; set; }
-            public string TimezoneId { get; set; }
+            public string? Sunset { get; set; }
+            public string? TimezoneId { get; set; }
             public double DstOffset { get; set; }
-            public string CountryName { get; set; }
-            public string Time { get; set; }
+            public string? CountryName { get; set; }
+            public string? Time { get; set; }
         }
 
         private const string timezoneApiUrl = "http://api.geonames.org/timezoneJSON";
         private const string timezoneApiUserName = "asbautodrilling";
 
-        public SimpleTimezoneDto GetByCoordinates(double latitude, double longitude)
-        => GetByCoordinatesAsync(latitude, longitude, default).Result;
+        public SimpleTimezoneDto? GetOrDefaultByCoordinates(double latitude, double longitude)
+        => GetOrDefaultByCoordinatesAsync(latitude, longitude, default).Result;
 
-        public async Task<SimpleTimezoneDto> GetByCoordinatesAsync(double latitude, double longitude, CancellationToken token)
+        public async Task<SimpleTimezoneDto?> GetOrDefaultByCoordinatesAsync(double latitude, double longitude, CancellationToken token)
         {
             var lat = latitude.ToString(System.Globalization.CultureInfo.InvariantCulture);
             var lng = longitude.ToString(System.Globalization.CultureInfo.InvariantCulture);
@@ -55,6 +55,9 @@ namespace AsbCloudInfrastructure.Services
             };
             var timezoneInfo = JsonSerializer.Deserialize<TimeZoneInfo>(responseJson, options);
 
+            if(timezoneInfo is null)
+                return null;
+
             return new SimpleTimezoneDto
             {
                 Hours = timezoneInfo.DstOffset,
diff --git a/AsbCloudInfrastructure/Services/WellService.cs b/AsbCloudInfrastructure/Services/WellService.cs
index eea16706..20486a64 100644
--- a/AsbCloudInfrastructure/Services/WellService.cs
+++ b/AsbCloudInfrastructure/Services/WellService.cs
@@ -326,7 +326,7 @@ namespace AsbCloudInfrastructure.Services
 
                     if (point.Latitude is not null & point.Longitude is not null)
                     {
-                        var timezone = timezoneService.GetByCoordinates(point.Latitude!.Value, point.Longitude!.Value);
+                        var timezone = timezoneService.GetOrDefaultByCoordinates(point.Latitude!.Value, point.Longitude!.Value);
                         if (timezone is not null)
                         {
                             return timezone;
diff --git a/AsbCloudWebApi.Tests/ServicesTests/TelemetryDataSaubServiceTest.cs b/AsbCloudWebApi.Tests/ServicesTests/TelemetryDataSaubServiceTest.cs
index 153de97f..83875eb1 100644
--- a/AsbCloudWebApi.Tests/ServicesTests/TelemetryDataSaubServiceTest.cs
+++ b/AsbCloudWebApi.Tests/ServicesTests/TelemetryDataSaubServiceTest.cs
@@ -34,9 +34,9 @@ namespace AsbCloudWebApi.Tests.ServicesTests
 
             telemetryTracker = new Mock<ITelemetryTracker>();
             timezoneService = new Mock<ITimezoneService>();
-            timezoneService.Setup(s => s.GetByCoordinatesAsync(It.IsAny<double>(), It.IsAny<double>(), It.IsAny<CancellationToken>()))
+            timezoneService.Setup(s => s.GetOrDefaultByCoordinatesAsync(It.IsAny<double>(), It.IsAny<double>(), It.IsAny<CancellationToken>()))
                 .Returns(Task.FromResult(timezone));
-            timezoneService.Setup(s => s.GetByCoordinates(It.IsAny<double>(), It.IsAny<double>()))
+            timezoneService.Setup(s => s.GetOrDefaultByCoordinates(It.IsAny<double>(), It.IsAny<double>()))
                 .Returns(timezone);
 
             context = TestHelpter.MakeRealTestContext();