drupal Can we write a rule to send email to the customers on particular date

I have a calendar module each user can create his schedules, meetings.

Now I want to send emails to the user before one hour (or one day before) of their s开发者_运维知识库chedule meetings.

Is that possible in drupal? I thought of working with rules but not sure that will work.

Any ideas guys please?

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Yes, rules can do that.