Hi Claudia!
Since Character Greetings take place throughout all four parks at various times, and those characters and times are subject to change, there is not a comprehensive list on the Disney website for specific character greeting times.
BUT, a great solution is to visit the character greeting pages for each of the parks, which I've provided below:
Magic Kingdom Character Greetings
Epcot Character Greetings
Disney's Hollywood Studios Character Greetings
Animal Kingdom Character Greetings
Each of these pages will tell you which characters you can meet at the parks. When you arrive at the park, make sure to pick up a Times Guide for the specific times and locations for each of the character meet -n- greets. You can also view the
maps for each of the parks for more information on where you can meet the characters.
I also found a great resource, which is "unofficial" but may help you in you planning on inter cot dot com. This site has an entire page dedicated to "finding characters" and it lists the park and specific location that you can meet each of the characters, from the 7 Dwarfs to Woody. I just caution that characters are subject to change. I also use wdw info dot com to look up the showtimes for fireworks, parades and more.
I hope you have a magical stay!
Magically,
Stacy