Couple ways I can think of including creating a new Gmail account and just putting those upcoming dates in the calendar app and asking the program to send you either an email or text reminder. You could also do this with your existing email accounts and I can say for certain that Google has a calendar component to it.

They second part of your question is why I thought you should set up a separate account because in order for someone to access your digital Google Caledar in your doomsday scenario you will be giving them access to all of the projects in the Google suite of apps. So if you need to separate work from play, so to speak just make a new one and use it exclusively for the calendar and just hand out that email address to anyone you never want to hear from again.