September 1, 2019. Difficulty rose by +5.78% to 10.77T from 10.18T.
Change
+5.78%
New difficulty
10.77T
Period length
13.2 days
Network hashrate then (7-day)
77.3 EH/s
Bitcoin price then
$9,839
Hashprice then
$248/PH/day
The 2,016 blocks before it took 13.2 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 5.78%: a large adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.