There is an excellent indicator- the Altseason index.

It shows whether the cryptocurrency market is currently in the altseason. To do this, the indicators of the top 100 altcoins in relation to bitcoin over the past 90 days are analyzed.

It is currently at the level of 54, that is, it is the boundary indicator between the bitcoin season and the altseason.

We will state the altseason when the index exceeds 75, besides, it can be at this level for several months, it is not necessary to merge all alts to zero only when the altseason level is reached for the first time.