You can set a Reminder on a Card.
It is a date visible only to a person who creates it for himself. Every user can have his own date on each card (one date for a card). It can be used to remind why a Card is important to the user and when. Only the user which created it will be notified once it's due. The user can select a custom name for this card as in custom card dates, but visibility will be private.
Adding a Reminder
Click on Add Date button and then on Reminder button.
Choose a date and the hour for your Reminder. You can also change its name to custom one.
Save these values.
The time has been chosen for your Reminder.
Change a date
You can change Reminder's name by clicking on its name, typing a new one and saving it.
To change the date of your Reminder, click on the date
Select the desired date and save it.
Removing a Reminder
Click on the button next to your Reminder. Click on Remove.
The reminder will be visible in the Calendar views of a Board or MyBoard.
Your Reminder is also visible on a timeline.
Reminders in MyBoard's calendar view. They will appear when Cards containing a personal date will be added to your MyBoard.