Holiday List
Make a holiday calendar for your store and employees.
Go to Setup then HR Setup and now Holiday List

Provide the holiday date and name. Select whether the holiday is for the entire day and whether it applies to production also. If it is for an entire day then select Full Day and if it is for production members then select Is Applicable for Production Too.
You also get an option to select that the holiday will be applied to which religion. After that click on submit.