diff --git a/js/functions.js b/js/functions.js
index 71abcf8..297c2cb 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -29,3 +29,23 @@ const extractDigits = (inputChar) => {
   }
   return digits ? Math.abs(parseInt(digits, 10)) : NaN;
 };
+
+// Функция для проверки, укладывается ли встреча в рамки рабочего дня.
+
+function isMeetingWithinWorkHours (workStart, workEnd, meetingStart, meetingDuration) {
+
+  const timeToMinutes = (time) => {
+    const [hours, minutes] = time.split(':').map(Number);
+    return hours * 60 + minutes;
+  };
+
+  const workStartMinutes = timeToMinutes(workStart);
+  const workEndMinutes = timeToMinutes(workEnd);
+  const meetingStartMinutes = timeToMinutes(meetingStart);
+  const meetingEndMinutes = meetingStartMinutes + meetingDuration;
+
+  return (
+    meetingStartMinutes >= workStartMinutes &&
+    meetingEndMinutes <= workEndMinutes
+  );
+}