diff --git a/.github/workflows/build_preview.yml b/.github/workflows/build_preview.yml
index 90b4b55..b1fe2d9 100644
--- a/.github/workflows/build_preview.yml
+++ b/.github/workflows/build_preview.yml
@@ -27,14 +27,13 @@ jobs:
         shell: pwsh
         run: |
           $NowTime = [int32](Get-Date -UFormat "%s")
+          Get-Date -UFormat "%Y-%m-%d_%H.%M.%S")
           $Zone = [int16](Get-Date -UFormat "%Z").ToString()
           $Zone
-          $NeedTime = (8 - $Zone) * 60 * 60
+          $NeedTime = ($Zone - 8) * 60 * 60
           $Result = $NowTime - $NeedTime
           $Formated = (Get-Date -UnixTimeSeconds $Result -UFormat "%Y-%m-%d_%H.%M.%S").ToString()
           $Formated
-          $Formated = (Get-Date -UnixTimeSeconds $NowTime -UFormat "%Y-%m-%d_%H.%M.%S").ToString()
-          $Formated
           "TIME_FORMATTED=$Formated" | Out-File -FilePath $env:GITHUB_ENV -Append
 
       - name: Add summary