Ol' Myrt says, be sure to add this DearMYRTLE hangouts calendar to your list of other Google calendars by clicking button in the lower right.
Add this DearMYRTLE hangouts calendar to your list of Google calendars by clicking the button right here.
Two other genealogy calendars that might interest you!
GeneaWebinars - a centralized calendar for all known genealogy related hangouts, webinars and tweetchats.
Conference Keeper - the most complete calendar and collection of "in person" genealogy events.