diff --git a/Timing-Functions/GetMonthDays.js b/Timing-Functions/GetMonthDays.js
index 2d0ccc993..fcf5604d3 100644
--- a/Timing-Functions/GetMonthDays.js
+++ b/Timing-Functions/GetMonthDays.js
@@ -21,7 +21,11 @@ const getMonthDays = (monthNumber, year) => {
   if (the30DaysMonths.includes(monthNumber)) { return 30 }
 
   // Check for Leap year
-  if (((year % 400) === 0) || (((year % 100) !== 0) && ((year % 4) === 0))) { return 29 }
+  if (year % 4 === 0) {
+    if ((year % 100 !== 0) || (year % 100 === 0 && year % 400 === 0)) {
+      return 29
+    }
+  }
 
   return 28
 }