Grandma Thora Appreciation Day

Grandma Thora Appreciation Day is the first half of the 15th episode of season 2 of the animated children's series Arthur. Together with Fern's Slumber Party, it first aired on March 9th, 1998.

Summary
Arthur and D.W. are planning a surprise party to show their appreciation for Grandma Thora. Grandma Thora unexpectedly shows up early when her car breaks down and they must finish their last minute preparations without her noticing.