Avoid manually entering events. It's easy to add iCal invites (.ics files) to your Google calendar if you follow these simple steps.

macOS 10.14.6. When I make reservations at OpenTable.com, I have the option to add it to my calendar on my Mac via a downloadable .ics file, the contents of which are: If I double-click it, it ...

Fix: Set iCal to open ".ics" filetypes Locate a calendar file either in a received or sent email iCal invitation, or by opening iCal and exporting a calendar to the desktop.

Using Microsoft Outlook, you can save your calendar to your PC as an Internet Calendar -- formatted as an iCalendar ICS file. ICalendars are compatible with most email and calendar services.