The stardate of the final episode “All Good Things...” is 47988.1.
That stardate identifies the present-day portion of Star Trek: The Next Generation’s series finale. In the story, Captain Jean-Luc Picard becomes caught between three time periods: the Enterprise-D’s present, its first mission near Farpoint seven years earlier, and a possible future 25 years later.
The episode uses temporal dislocation rather than treating the three settings as ordinary sequential events. Q sends Picard through these periods to reveal that a spatial anomaly is developing in the past and could threaten humanity’s existence. Picard must connect evidence from all three eras before the crisis becomes irreversible.
The number is often confused with the stardate from the premiere, 41153.7, because the finale deliberately revisits the Enterprise’s first mission. The premiere and finale also share a structural connection through Q, but 47988.1 belongs to the finale’s contemporary timeline and is the standard episode stardate.