2400s

From Tardis Wiki, the free Doctor Who reference
Timeline
2360s •2370s • 2380s • 2390s
2400
part of the 25th century
24062409
2410s • 2420s • 2430s • 2440s

The 2400s was the first decade of the 25th century.

Most notably, beginning in 2400, the Daleks launched a major invasion of the Solar system. It lasted throughout the decade but had ended by 2409 when the Age of Universal Peace began. (PROSE: Break-through! et al.)