July 9, 2019. Difficulty rose by +14.23% to 9.06T from 7.93T.
Change
+14.23%
New difficulty
9.06T
Period length
12.3 days
Network hashrate then (7-day)
67.4 EH/s
Bitcoin price then
$12,179
Hashprice then
$319/PH/day
The 2,016 blocks before it took 12.3 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 14.23%: 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.