Update README.md

Author: sivamuruganandam-coder

Core ServiceNow APIs/GlideDateTime/Calculate Due date using user defined schedules/README.md

@@ -4,11 +4,13 @@ This can be used anywhere within the server side scripts like fix scripts, backg
 
 **Pre-requisite:**
 A schedule record with valid schedule entries should be created in the cmn_schedule table
+A business hours value per day need to be configured
+In this sample, the business hours per day is configured as 8 hours i.e 9AM - 5PM.
 
 **Sample:**
 var daysToAdd = 4; // No of days need to be added
 var script = new CaclculateDueDate().calculateDueDate(new GlideDateTime(),daysToAdd); // Passing the current date and daysToAdd value to script include
 gs.print(script);
 
 **Output:**
-*** Script: 2025-10-09 11:23:34
+*** Script: 2025-10-13 13:56:07