This extension allows you to set a tab to be opened at a later time.
Reminder tabs allows you to save tabs and have them be opened automatically at a later time (when you open up Chrome). You can set the current page you're on to open once, daily, weekly, biweekly, or monthly. I would commonly bookmark a page thinking I would look at it again, only to forget about it. This way the the page will automatically open up at a later date.