May 13, 2021. Difficulty rose by +21.53% to 25.05T from 20.61T.
Change
+21.53%
New difficulty
25.05T
Period length
11.5 days
Network hashrate then (7-day)
179.0 EH/s
Bitcoin price then
$54,247
Hashprice then
$305/PH/day
The 2,016 blocks before it took 11.5 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 21.53%: 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.