[Drupal] How to add Google calendar in Drupal site?

Google calendars are used to track events, a way for organizing your scheduled works/tasks with easy accesses. In one of my Drupal site, I need to embed a Google calendar to create nodes on Drupal based on events from a Google calendar.

The following are the steps sync the Google calendar with Drupal:

• Sign-in to your google account and click on the Calendar events at the top-right.
• Search for the calendar settings inside the Google calendar.
• On settings block, check the link "Share this calendar".
• Check the option "Make this calendar public" on the calendar sharing panel.
• Now click on your calendar name and check for the Details block. Copy the embed code on the details block.
• In Drupal site, Goto (admin/content/node/overview). Create a new content.
• Check the filter for the content from filtered HTML to PHP code and paste the embed code in the body of the content.
• After saving, you find the the complete calendar appears for the node created.