January 25, 2018. Difficulty rose by +16.84% to 2.60T from 2.23T.
Change
+16.84%
New difficulty
2.60T
Period length
12.0 days
Network hashrate then (7-day)
19.3 EH/s
Bitcoin price then
$10,981
Hashprice then
$1,078/PH/day
The 2,016 blocks before it took 12.0 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 16.84%: 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.