November 18, 2016. Difficulty rose by +10.68% to 281.80B from 254.62B.
Change
+10.68%
New difficulty
281.80B
Period length
12.7 days
Network hashrate then (7-day)
2.0 EH/s
Bitcoin price then
$737
Hashprice then
$660/PH/day
The 2,016 blocks before it took 12.7 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 10.68%: one of the largest adjustments on record. For every machine on the network that is a pay cut of the same size until the next retarget.