You can add additional public holidays or disable in Settings.
Put a tick on this box if you want the Public Holiday to move on the next day
Adding Public Holiday
Step 1: Click on 
then 
Step 2: Click on the 
tab at the top
Step 3: Click on 
the a Pop up window will appear
Step 4: Enter the holiday date 
Step : Enter the holiday name 
Step 5: Click on the 
to save the configuration
Disable Public Holiday
Step 1: Click on then
Step 2: Click on the tab at the top
Step 3: Scroll down to the holiday you want to disable
Step 4: Click on the 