On what date was Rory Gilmore born in the show's story?

Rory Gilmore was born on October 8, 1984, in the show's story.

Rory is the daughter of Lorelai Gilmore and Christopher Hayden. Her birth date is part of the character's established biography and places her birth during the period when Lorelai was a teenager. Lorelai later raises Rory largely on her own in Stars Hollow.

The date helps explain the timeline of the original series. When the show begins, Rory is sixteen and preparing to attend Chilton. She later graduates from the school and enters Yale, following the progression from adolescence to early adulthood that structures the series.

This date should not be confused with Alexis Bledel's real birth date. Bledel portrayed Rory, but the trivia question concerns the fictional character's chronology. It is also separate from the show's premiere date, which belongs to the television production rather than Rory's story.