Never miss a shared calendar event. Shared calendars are great, you a parent, sibling, co worker or friend can share events with you on iPhone.
The sharer can choose which calendars of course and weather they are read only (only viewable, but not changeable) or changeable and viewable. Once you've shared, make sure everyone's iOS device has the followings settings set to on. This way those shared calendar events once created, modified or deleted will generate a little notification on the shared iOS devices.
Turn on notifications for shared calendars:
Select Mail, Contacts, Calendars
No one need be surprised by uncle Bob's surprise birthday party or miss wishing their sister a safe flight or forget that tonight you have to finish work early because its your son's parents evening.
Blimey, is that the time got to run!
Slide on Shared Calendar Alerts.