Bookmark Reminder is an extension that lets you add a page as an event in Google Calendar or save it as an.ics file. 

Bookmark Reminder is an open-source project, and you can follow it on GitHub to get a notification when there are new releases, or better yet, if you have a bug, report it.

You can choose whether to add a page like a regular event in your calendar or to save it as an. You can use it as a reminder for any page, and you can choose between Google Calendar and iCalendar.

How to download it:

Download it from Chrome Web Store and install it on your computer. Open it and it will automatically start.