Calendar Alert is a free service to keep track of future events, important dates and projects. By using calendar alerts, your events will be automatically emailed at your nominated time.
The site offers: a personal diary that can be accessed globally at anytime, a reminder for school assignments and projects, a monthly, quarterly or yearly billing reminder system for all accounts, etc. It is very simple to understand how it works; you just have to click the day the event falls on, fill in the information boxes, set up the email remainders and submit. So, if you don’t have a good memory and you always forget about what you have to do, here you will find a very good solution. 
