diff --git a/common/src/calendar.rs b/common/src/calendar.rs
index 830207809c..c2cf2299c4 100644
--- a/common/src/calendar.rs
+++ b/common/src/calendar.rs
@@ -6,6 +6,7 @@ use serde::{Deserialize, Serialize};
 #[repr(u16)]
 pub enum CalendarEvent {
     Christmas = 0,
+    Halloween = 1,
 }
 
 #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
@@ -37,6 +38,10 @@ impl Calendar {
             this.events.push(CalendarEvent::Christmas);
         }
 
+        if now.month() == 10 && (01..=31).contains(&now.day()) {
+            this.events.push(CalendarEvent::Halloween);
+        }
+
         this
     }
 }