diff --git a/AsbCloudApp/Services/Subsystems/ISubsystemOperationTimeService.cs b/AsbCloudApp/Services/Subsystems/ISubsystemOperationTimeService.cs
index 2f6fb8f5..746fa398 100644
--- a/AsbCloudApp/Services/Subsystems/ISubsystemOperationTimeService.cs
+++ b/AsbCloudApp/Services/Subsystems/ISubsystemOperationTimeService.cs
@@ -64,5 +64,13 @@ namespace AsbCloudApp.Services.Subsystems
         /// <param name="token"></param>
         /// <returns></returns>
         Task<IEnumerable<SubsystemActiveWellStatDto>> GetStatByActiveWells(IEnumerable<int> wellIds, CancellationToken token);
+        
+        /// <summary>
+        /// Получение периода, за который будет расчитываться статистика
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="token"></param>
+        /// <returns></returns>
+        Task<IEnumerable<DateTime>> GetStatDateRangeAsync(SubsystemOperationTimeRequest request, CancellationToken token);
     }
 }
diff --git a/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs b/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs
index d866c974..11c3014b 100644
--- a/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs
+++ b/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeService.cs
@@ -109,6 +109,20 @@ namespace AsbCloudInfrastructure.Services.Subsystems
             return statList;
         }
 
+        public async Task<IEnumerable<DateTime>> GetStatDateRangeAsync(SubsystemOperationTimeRequest request, CancellationToken token)
+        {
+            request.SelectMode = SubsystemOperationTimeRequest.SelectModeTrim;
+            var data = await GetOperationTimeAsync(request, token);
+            if (data is null)
+                return Enumerable.Empty<DateTime>();
+
+            var dateRanges = new List<DateTime>();
+            dateRanges.Add(data.Min(d => d.DateStart));
+            dateRanges.Add(data.Max(d => d.DateEnd));
+
+            return dateRanges.AsEnumerable();
+        }
+
         private static IEnumerable<SubsystemOperationTime> TrimOperation(IEnumerable<SubsystemOperationTime> data, DateTimeOffset? gtDate, DateTimeOffset? ltDate)
         {
             if (!ltDate.HasValue && !gtDate.HasValue) 
@@ -162,7 +176,7 @@ namespace AsbCloudInfrastructure.Services.Subsystems
                     UsedTimeHours = periodGroup,
                     KUsage = periodGroupDepth / depthIntervalSubsystem,
                     SumDepthInterval = periodGroupDepth,
-                    OperationCount = g.Count()
+                    OperationCount = g.Count(),
                 };
                 if (subsystemStat.KUsage > 1)
                     subsystemStat.KUsage = 1;
diff --git a/AsbCloudWebApi/Controllers/Subsystems/SubsystemOperationTimeController.cs b/AsbCloudWebApi/Controllers/Subsystems/SubsystemOperationTimeController.cs
index 44deb4d9..879d61b7 100644
--- a/AsbCloudWebApi/Controllers/Subsystems/SubsystemOperationTimeController.cs
+++ b/AsbCloudWebApi/Controllers/Subsystems/SubsystemOperationTimeController.cs
@@ -53,6 +53,22 @@ namespace AsbCloudWebApi.Controllers.Subsystems
             return Ok(subsystemResult);
         }
 
+        /// <summary>
+        /// получить период, за который будет расчитываться статистика
+        /// </summary>
+        [HttpGet("dateRange")]
+        [ProducesResponseType(typeof(IEnumerable<DateTime>), (int)System.Net.HttpStatusCode.OK)]
+        public async Task<IActionResult> GetStatDateRangeAsync([FromQuery] SubsystemOperationTimeRequest request, CancellationToken token)
+        {
+            if (!await UserHasAccesToWellAsync(request.IdWell, token))
+                return Forbid();
+            if (!await IsValidRequest(request, token))
+                return BadRequest("Запрашиваемый диапазон должен заканчиваться за 2 часа до текущего времени(после приведения к UTC).");
+            
+            var dateRange = await subsystemOperationTimeService.GetStatDateRangeAsync(request, token);
+            return Ok(dateRange);
+        }
+
         /// <summary>
         /// получить статистику  по активным скважинам
         /// </summary>