June 29, 2013. Difficulty rose by +10.32% to 21.34M from 19.34M.
Change
+10.32%
New difficulty
21.34M
Period length
12.7 days
Network hashrate then (7-day)
0.0 EH/s
Bitcoin price then
$95
Hashprice then
$2,146,502/PH/day
The 2,016 blocks before it took 12.7 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 10.32%: 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.