Its very easy to block all the holidays of your country from Google calendar to your Appointy calendar. Wondering how? Well here're the easy steps to do it
Step 1: In your GOOGLE calendar, create a new calendar under "My calendar" (in this example Import Holidays to Appointy). 
Step 2: Under Other Calendars click on the "Browse for Interesting Calendars" option.
Step 3: From the list of Holidays calendar of various countries, Click on the subscribe link (in this example US HOLIDAYS calendar). Once subscribed it will appear under "Other calendars" (see US Holidays)
Step 4: Click on the calendar settings of US Holidays
Step 5: Click on the iCAl icon. It will open the link of that calendar. Click on it download a file in ics format
Step 6: Once your file is downloaded. Click on the down arrow of the MY CALENDARS>>Settings
Step 7: Under My Calendars, you will see "Import Calendar" link beside "create new calendar" link. Click on the Import Calendar link>> A pop up will appear where you can upload the downloaded ics file>> Also, make sure to choose the correct calendar to import it upon (in this case Click on the Import Holidays to Appointy)
Step 8: You will get a notification of the number of events being imported to the calendar. In this case "85 events"
Step 9: Login to your Appointy admin console>>Go to MASHUPS>>Google Calendar>>Click on the "Synchronize with google calendar"
Step 10: After clicking on the sync link, you will see all the fetched holidays from Google calendar. Scroll down to the bottom of the page and click on the 
button to sync the holidays.
Once you synchronized the events, Appointy will show a message "Successfully Synchronized (X# Events); Appointy was successfully synchronized with your Google calendar".
In case you have any issues setting it up, our support officers will be happy to share screens with you and set it up for you. You can reach us at contact@appointy.com OR also directly schedule an appointment from http://support.appointy.com for guided screen sharing session