For Walt Disney World Dining you can make your advanced dining reservations 180 days in advance of check in. If you are staying on property you can make them for up to a 10 day stay. This ‘plus 10’ gets you a little jump on the general public for dates later in your trip.

Disneyland Resort Dining reservations are available 60 days in advance, while not nearly as popular and not the same urgency if you know what you want and what days you should go ahead and make ADR’s.

To get your ADR date this website: http://pscalculator.net/pscalc.php is very helpful and has both the 180 days and 60 days listed.