November 21, 2019. Difficulty rose by +1.99% to 12.97T from 12.72T.
Change
+1.99%
New difficulty
12.97T
Period length
13.7 days
Network hashrate then (7-day)
95.6 EH/s
Bitcoin price then
$7,731
Hashprice then
$158/PH/day
The 2,016 blocks before it took 13.7 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 1.99%: an ordinary adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.