diff --git a/AsbCloudApp/Data/ClusterDto.cs b/AsbCloudApp/Data/ClusterDto.cs
index 8a9a95e6..17a182ce 100644
--- a/AsbCloudApp/Data/ClusterDto.cs
+++ b/AsbCloudApp/Data/ClusterDto.cs
@@ -23,7 +23,7 @@ namespace AsbCloudApp.Data
         public double? Longitude { get; set; }
 
         /// <inheritdoc/>
-        public SimpleTimezoneDto Timezone { get; set; } = null!;
+        public SimpleTimezoneDto? Timezone { get; set; }
 
         /// <summary>
         /// ИД месторождения, необязательный
@@ -38,7 +38,7 @@ namespace AsbCloudApp.Data
         /// <summary>
         /// Список скважин куста
         /// </summary>
-        public IEnumerable<WellDto> Wells { get; set; } = null!;
+        public IEnumerable<WellDto>? Wells { get; set; } = null!;
     }
 #nullable disable
 }
diff --git a/AsbCloudApp/Data/SimpleTimezoneDto.cs b/AsbCloudApp/Data/SimpleTimezoneDto.cs
index 3d9dcc55..c2db8338 100644
--- a/AsbCloudApp/Data/SimpleTimezoneDto.cs
+++ b/AsbCloudApp/Data/SimpleTimezoneDto.cs
@@ -36,5 +36,9 @@ namespace AsbCloudApp.Data
            => Hours.GetHashCode()
             | TimezoneId.GetHashCode()
             | IsOverride.GetHashCode();
+
+        /// <inheritdoc/>
+        public override string ToString()
+            => $"{TimezoneId} (UTC+{Hours:00.##})";
     }
 }
\ No newline at end of file
diff --git a/AsbCloudInfrastructure/EfCache/EfCacheDictionaryExtensions.cs b/AsbCloudInfrastructure/EfCache/EfCacheDictionaryExtensions.cs
index 9846f872..21a672f7 100644
--- a/AsbCloudInfrastructure/EfCache/EfCacheDictionaryExtensions.cs
+++ b/AsbCloudInfrastructure/EfCache/EfCacheDictionaryExtensions.cs
@@ -89,18 +89,6 @@ namespace AsbCloudInfrastructure.EfCache
                     try
                     {
                         cache = new CacheItem();
-
-                        var dateObsolete = DateTime.Now + obsolete;
-                        var dateQueryStart = DateTime.Now;
-                        var data = valueFactory();
-                        var queryTime = DateTime.Now - dateQueryStart;
-
-                        if (dateObsolete - DateTime.Now < minCacheTime)
-                            dateObsolete = DateTime.Now + minCacheTime;
-
-                        cache.Data = data;
-                        cache.DateObsolete = dateObsolete;
-                        cache.DateObsoleteTotal = dateObsolete + queryTime + minCacheTime;
                         caches.Add(tag, cache);
                     }
                     catch
@@ -182,18 +170,6 @@ namespace AsbCloudInfrastructure.EfCache
                     try
                     {
                         cache = new CacheItem();
-
-                        var dateObsolete = DateTime.Now + obsolete;
-                        var dateQueryStart = DateTime.Now;
-                        var data = await valueFactoryAsync(token);
-                        var queryTime = DateTime.Now - dateQueryStart;
-
-                        if (dateObsolete - DateTime.Now < minCacheTime)
-                            dateObsolete = DateTime.Now + minCacheTime;
-
-                        cache.Data = data;
-                        cache.DateObsolete = dateObsolete;
-                        cache.DateObsoleteTotal = dateObsolete + queryTime + minCacheTime;
                         caches.Add(tag, cache);
                     }
                     catch
diff --git a/AsbCloudInfrastructure/EfCache/EfCacheExtensions.cs b/AsbCloudInfrastructure/EfCache/EfCacheExtensions.cs
index e8c8a6e2..b1a9e382 100644
--- a/AsbCloudInfrastructure/EfCache/EfCacheExtensions.cs
+++ b/AsbCloudInfrastructure/EfCache/EfCacheExtensions.cs
@@ -85,18 +85,6 @@ namespace AsbCloudInfrastructure.EfCache
                 {
                     try {
                         cache = new CacheItem();
-
-                        var dateObsolete = DateTime.Now + obsolete;
-                        var dateQueryStart = DateTime.Now;
-                        var data = valueFactory();
-                        var queryTime = DateTime.Now - dateQueryStart;
-
-                        if (dateObsolete - DateTime.Now < minCacheTime)
-                            dateObsolete = DateTime.Now + minCacheTime;
-
-                        cache.Data = data;
-                        cache.DateObsolete = dateObsolete;
-                        cache.DateObsoleteTotal = dateObsolete + queryTime + minCacheTime;
                         caches.Add(tag, cache);
                     }
                     catch
@@ -178,18 +166,6 @@ namespace AsbCloudInfrastructure.EfCache
                     try
                     {
                         cache = new CacheItem();
-
-                        var dateObsolete = DateTime.Now + obsolete;
-                        var dateQueryStart = DateTime.Now;
-                        var data = await valueFactoryAsync(token);
-                        var queryTime = DateTime.Now - dateQueryStart;
-
-                        if (dateObsolete - DateTime.Now < minCacheTime)
-                            dateObsolete = DateTime.Now + minCacheTime;
-
-                        cache.Data = data;
-                        cache.DateObsolete = dateObsolete;
-                        cache.DateObsoleteTotal = dateObsolete + queryTime + minCacheTime;
                         caches.Add(tag, cache);
                     }
                     catch