Each time you make a new Google Calendar event, this applet adds a new task at that time with that description to Todoist. (Unfortunately, does not add existing GCal events or sync changes.) Yes, Todoist has also published an applet for this, but for some reason it fails for me. Also, if you have multiple Google Calendars you use, you can only use one of them with IFTTT. But, pro-tip, you can make multiple IFTTT accounts, one of each calendar.
If
New event added
This Trigger fires every time a new event is added to your Google Calendar. Note: The time in the ingredient will be based on the timezone set in Google Calendar.
Fewer details
Discover more time saving integrations for Google Calendar and Todoist