diff --git a/cosmic-applet-time/src/config.rs b/cosmic-applet-time/src/config.rs
index c861f688..97ce9212 100644
--- a/cosmic-applet-time/src/config.rs
+++ b/cosmic-applet-time/src/config.rs
@@ -5,6 +5,7 @@ use cosmic::cosmic_config::{self, CosmicConfigEntry};
 #[version = 1]
 pub struct TimeAppletConfig {
     pub military_time: bool,
+    pub first_day_of_week: u8,
     pub show_date_in_top_panel: bool,
 }
 
@@ -12,6 +13,7 @@ impl Default for TimeAppletConfig {
     fn default() -> Self {
         Self {
             military_time: false,
+            first_day_of_week: 6,
             show_date_in_top_panel: true,
         }
     }
diff --git a/cosmic-applet-time/src/window.rs b/cosmic-applet-time/src/window.rs
index d3fef494..4061e9cd 100644
--- a/cosmic-applet-time/src/window.rs
+++ b/cosmic-applet-time/src/window.rs
@@ -317,7 +317,8 @@ impl cosmic::Application for Window {
 
         // Calender
         let mut calender: Grid<'_, Message> = grid().width(Length::Fill);
-        let mut first_day_of_week = Weekday::Sun; // TODO: Configurable
+        let mut first_day_of_week =
+            Weekday::try_from(self.config.first_day_of_week).unwrap_or(Weekday::Sun);
         for _ in 0..7 {
             calender = calender.push(
                 text(first_day_of_week)