October 23, 2019. Difficulty rose by +5.25% to 13.69T from 13.01T.
Change
+5.25%
New difficulty
13.69T
Period length
13.3 days
Network hashrate then (7-day)
98.7 EH/s
Bitcoin price then
$8,334
Hashprice then
$145/PH/day
The 2,016 blocks before it took 13.3 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 5.25%: a large adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.