This article explains how to select, customize, and embed a Google Calendar on your website. Instructions apply to desktops on any browser.
How to: Add a calendar to your website in Google Calendar
Use the free Google Calendar to manage and share a public calendar on your website.
To embed a calendar, log in to Google Calendar. Then go to the left panel and hover over the calendar you want to embed. Select the three dots that appear. Select Settings and sharing in the expanded options box.
Scroll down to the Integrate Calendar section. Under Use this code to embed this calendar in a web page, copy the embed code. The default size is an 800×600 calendar with Google's default color scheme.