30th century in the context of "3rd millennium"

The third millennium of the Anno Domini or Common Era is the current millennium spanning the years 2001 to 3000. It began on January 1, 2001 (MMI) and will end on December 31, 3000 (MMM), (21st to 30th centuries; in astronomy: JD 2451910.5 – 2817151.5).

Ongoing futures studies seek to understand what will likely continue and what could plausibly change in this period and beyond.