diff --git a/api/Sozsoft.Platform.HttpApi.Host.Dockerfile b/api/Sozsoft.Platform.HttpApi.Host.Dockerfile
index bf9a2b1..8b291e3 100644
--- a/api/Sozsoft.Platform.HttpApi.Host.Dockerfile
+++ b/api/Sozsoft.Platform.HttpApi.Host.Dockerfile
@@ -75,6 +75,7 @@ RUN mkdir -p $HOME/.config/DevExpress && \
 # fontconfig ve fonts-* DevExpress reporting için gerekli
 RUN apk update 
 RUN apk add --no-cache \
+    tzdata \
     icu-data-full \
     icu-libs \
     libgdiplus \
diff --git a/api/src/Sozsoft.Platform.Application/BackgroundWorker/BackgroundWorkerInitializer.cs b/api/src/Sozsoft.Platform.Application/BackgroundWorker/BackgroundWorkerInitializer.cs
index a12da0a..4a21f10 100644
--- a/api/src/Sozsoft.Platform.Application/BackgroundWorker/BackgroundWorkerInitializer.cs
+++ b/api/src/Sozsoft.Platform.Application/BackgroundWorker/BackgroundWorkerInitializer.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Runtime.InteropServices;
 using System.Text.Json;
 using System.Threading.Tasks;
 using Hangfire;
@@ -31,6 +32,12 @@ public class BackgroundWorkerInitializer : ITransientDependency
 
     public async Task RunAsync()
     {
+        var turkeyTimeZone = GetTurkeyTimeZone();
+
+        _logger.LogInformation(
+            "Background workers Türkiye saat dilimine göre kuruluyor. TimeZoneId: {TimeZoneId}",
+            turkeyTimeZone.Id);
+
         var jobs = JobStorage.Current.GetConnection().GetRecurringJobs();
         var workers = await _repo.GetListAsync(a => a.IsActive);
 
@@ -53,7 +60,7 @@ public class BackgroundWorkerInitializer : ITransientDependency
                 worker.Cron,
                 new RecurringJobOptions
                 {
-                    TimeZone = TimeZoneInfo.Local,
+                    TimeZone = turkeyTimeZone
                 });
 
             if (worker.WorkerType == WorkerTypeEnum.MailQueueWorker && !worker.Options.IsNullOrWhiteSpace())
@@ -67,4 +74,28 @@ public class BackgroundWorkerInitializer : ITransientDependency
             }
         }
     }
-}
+
+    private static TimeZoneInfo GetTurkeyTimeZone()
+    {
+        var timeZoneIds = RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
+            ? new[] { "Turkey Standard Time", "Europe/Istanbul" }
+            : new[] { "Europe/Istanbul", "Turkey Standard Time" };
+
+        foreach (var timeZoneId in timeZoneIds)
+        {
+            try
+            {
+                return TimeZoneInfo.FindSystemTimeZoneById(timeZoneId);
+            }
+            catch (TimeZoneNotFoundException)
+            {
+            }
+            catch (InvalidTimeZoneException)
+            {
+            }
+        }
+
+        throw new TimeZoneNotFoundException(
+            "Türkiye saat dilimi bulunamadı. Linux/Docker için 'Europe/Istanbul', Windows için 'Turkey Standard Time' gerekir.");
+    }
+}
\ No newline at end of file
diff --git a/api/src/Sozsoft.Platform.DbMigrator/Seeds/HostData.json b/api/src/Sozsoft.Platform.DbMigrator/Seeds/HostData.json
index 44be831..3b21d70 100644
--- a/api/src/Sozsoft.Platform.DbMigrator/Seeds/HostData.json
+++ b/api/src/Sozsoft.Platform.DbMigrator/Seeds/HostData.json
@@ -1073,7 +1073,8 @@
             "workerType": "BackupWorker",
             "isActive": true,
             "dataSourceCode": "Default",
-            "beforeSp": "Adm_T_DatabaseBackup"
+            "beforeSp": "Adm_T_DatabaseBackupAll",
+            "afterSp": "Adm_T_DatabaseBackupDeleteAll"
         }
     ],
     "ContactTitles": [
diff --git a/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackup.sql b/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackupAll.sql
similarity index 58%
rename from api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackup.sql
rename to api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackupAll.sql
index d1ef0fa..2746b29 100644
--- a/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackup.sql
+++ b/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackupAll.sql
@@ -1,14 +1,15 @@
-CREATE OR ALTER PROCEDURE [dbo].[Adm_T_DatabaseBackup]
+CREATE OR ALTER PROCEDURE [dbo].[Adm_T_DatabaseBackupAll]
 AS
 BEGIN
     SET NOCOUNT ON;
 
     DECLARE @SQL NVARCHAR(MAX) = N'';
-
+    DECLARE @Tarih NVARCHAR(20) = CONVERT(CHAR(8), CAST(SYSUTCDATETIME() AT TIME ZONE 'UTC' AT TIME ZONE 'Turkey Standard Time' AS DATE),112);
+    
     SELECT @SQL = @SQL + N'
 BACKUP DATABASE ' + QUOTENAME(name) + N'
 TO DISK = N''/var/opt/mssql/backup/' 
-+ name + N'_' + CONVERT(VARCHAR(8), GETDATE(), 112) + N'.bak''
++ name + N'_' + @Tarih + N'.bak''
 WITH INIT;'
     FROM sys.databases
     WHERE name NOT IN ('master','model','msdb','tempdb')
diff --git a/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackupDeleteAll.sql b/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackupDeleteAll.sql
new file mode 100644
index 0000000..69429db
--- /dev/null
+++ b/api/src/Sozsoft.Platform.DbMigrator/Seeds/SqlData/Adm_T_DatabaseBackupDeleteAll.sql
@@ -0,0 +1,11 @@
+CREATE OR ALTER PROCEDURE [dbo].[Adm_T_DatabaseBackupDeleteAll]
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    DECLARE @DeleteDate date 
+
+    SET @DeleteDate = DATEADD(DAY, -1, GETDATE())
+
+    EXEC master.sys.xp_delete_file 0, '/var/opt/mssql/backup/', 'BAK', @DeleteDate, 0;
+END
\ No newline at end of file