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