How we cite our quotes:
As time went on, and the months and years came and went, he was never without friends. […] But Charlotte's children and grandchildren and great grandchildren, year after year, lived in the doorway. Each spring there were new little spiders hatching out to take the place of the old. Most of them sailed away, on their balloons. But always two or three stayed and set up housekeeping in the doorway. (22.67)
Wilbur has something to look forward to every single spring: new spider babies! This means that spring isn't going to be marked just by Wilbur's birthday, but also by the birthdays of tons of tiny eight-legged new friends.