Bitcoin Halving 2016
The Bitcoin halving of Jul 9, 2016 cut the block subsidy from 25 to 12.5 BTC per block, taking annual issuance from about 1,314,000 to about 657,000 BTC. Bitcoin closed that week at $663. The confirmed cycle bottom before it was Jan 14, 2015 at $176, 542 days earlier. The confirmed cycle peak after it was Dec 16, 2017 at $19,641, 525 days later.