April 1, 2018. Difficulty rose by +1.40% to 3.51T from 3.46T.
Change
+1.40%
New difficulty
3.51T
Period length
13.8 days
Network hashrate then (7-day)
24.9 EH/s
Bitcoin price then
$7,108
Hashprice then
$571/PH/day
The 2,016 blocks before it took 13.8 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 1.40%: an ordinary adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.