diff --git a/base/common_hardware.nix b/base/common_hardware.nix
index 6f3c94d..e5b9029 100644
--- a/base/common_hardware.nix
+++ b/base/common_hardware.nix
@@ -59,25 +59,23 @@ in {
       ++ config.conf.bootParams;
   };
 
-  # Enable networking
   networking = {
     useDHCP = lib.mkDefault true;
     networkmanager.enable = true;
     hostName = hostName;
   };
 
-  # Set your time zone.
-  time.timeZone = config.conf.timezone;
+  time = {
+    timeZone = config.conf.timezone;
+    hardwareClockInLocalTime = config.conf.systemLocalTime;
+  };
 
-  # Select internationalisation properties.
   i18n.defaultLocale = config.conf.locale;
 
-  # Enable the X11 windowing system.
   services = {
     lorri.enable = true;
     xserver.enable = true;
     fstrim.enable = lib.mkDefault true;
-    # Enable sound with pipewire.
     pulseaudio.enable = false;
     pipewire = {
       enable = true;
diff --git a/modules/conf.nix b/modules/conf.nix
index 5189e92..d7a8dc2 100644
--- a/modules/conf.nix
+++ b/modules/conf.nix
@@ -1,7 +1,6 @@
 {
   lib,
   config,
-  pkgs,
   options,
   ...
 }: {
@@ -20,6 +19,14 @@
       '';
     };
 
+    systemLocalTime = lib.mkOption {
+      default = false;
+      example = true;
+      description = ''
+        System time for dualbooting
+      '';
+    };
+
     wsl = lib.mkOption {
       default = false;
       example = true;