Delivery plan not showing correct dates on request - Support and Troubleshooting

Delivery plan not showing correct dates on request Issue The delivery time is set to 5 days on the item and in the workflow. The schedule is (8-5, excluding weekends) and the expected time is set to 1 day, 16 hours. The delivery time is not showing up as 5 days. Resolution The expected delivery time is calculated by Workflow. This is done in an API - global.Workflow().getEstimatedDeliveryTime(); in script include "Workflow". It involves calculation based on many parameters specified under schedule of a workflow like timezone, selected schedule etc. In customer's case as soon as a schedule is selected say 8-5 weekdays. The Estimated Time is converted into hours and added to the current date based on schedule. So for example, if you set estimated time as 2 Days without schedule - The estimated delivery is simply 2 Days. But when you select schedule then 2days(48 hours) are added to current time based on schedule. ie. 48 hours divided by 9 hours (1 working day). This comes to ~5 days. Delivery time is calculated as difference from current time and the estimated time. Lets say if a catalog item is ordered on Sunday morning, the time is calculated as follows. - As Sunday is weekend, it is not included in the schedule. - Delivery time considers even the weekend. - As the schedule in the workflow is ,mentioned as 8-5 weekdays excluding holidays, 9 hours will be considered per day. - Starting from Sunday, the schedule is counted till it lapses 5 days. - Please find the screenshot attached on the incident. Note: If timezone is selected then few hours may be added or subtracted as well.