BTC's first halving: November 28, 2012
A month and a half after the halving, the bull market began to rise
That is, it started in February 2013
BTC's second halving: July 9, 2016
A bull market began to rise 3 months after the halving
That is, it started in October 2016
BTC's third halving: May 11, 2020
A bull market began to rise 5 months after the halving
That is, it started in October 2020
BTC's fourth halving: April 20, 2024
A bull market began to rise 7 months after the halving
That is, it started in November 2024