Context: The 2017 Major League Baseball season began on April 2, 2017 with three games, including the 2016 World Series champions Chicago Cubs facing off against the St. Louis Cardinals, and ended on October 1. The postseason began on October 3. The 2017 World Series began October 24 and Game 7 was played on November 1, in which the Houston Astros defeated the Los Angeles Dodgers, 5-1, to capture their first World Series championship in franchise history.

Question: when does the world series start in baseball?
Steam of consciousness below:
The relevant sentence in the passage is: The 2017 World Series began October 24 and Game 7 was played on November 1, in which the Houston Astros defeated the Los Angeles Dodgers, 5-1, to capture their first World Series championship in franchise history.
So, the answer is October 24.