This page is my LIFE PORTAL.
It's just a local page with commonly used links (with accesskeys!), reminders, and calendar so you don't have to pop up your OS's Date/Time widget and whoops you just set your clock to next year haw haw.
Save a copy of the page locally, and open it in a text editor to see how to make reminders and add links and stuff. If you like it, make it your browser's start page.
A real calendaring system would do more, but my thing is simple and fast. And as my browser's start page, it's everywhere ya wanna be!