Just been diving into the crypto cycle patterns, and there's something fascinating about how altseason actually works that most people seem to miss. Let me break down what I've found.

So what is alt season, exactly? It's basically the period when altcoins start outperforming Bitcoin. You'll see Bitcoin's price going up, but its market dominance dropping — that's the key signal. The interesting part is that altseason has a pretty clear definition: it starts when Bitcoin dominance hits a local peak, and it ends when the total altcoin market cap (excluding Bitcoin) reaches a new all-time high.

Here's where it gets wild. We've only seen two real global altseasons so far, and the patterns are almost eerily similar. The first one kicked off on March 1, 2017, when Bitcoin dominance was hovering around 96%. Within less than a year, it had crashed down to 36% by January 2018. That single altseason run lasted exactly 310 days and saw the total altcoin market cap explode from basically nothing to $470 billion — a 564x increase. Absolutely insane numbers.

The second altseason was even bigger in absolute terms. Starting January 3, 2021, Bitcoin dominance fell from around 73% and eventually bottomed out on September 8, 2022. But here's the thing — only about half of that decline actually counted as altseason, since the other half happened during Bitcoin's bear market. The real peak for altcoins came on November 10, 2021, which coincided perfectly with Bitcoin's cycle top. That second altseason lasted 309 days and added $1.5 trillion to the total altcoin market cap — a 650% increase.

Now, this is where it gets really interesting. Both altseasons lasted almost exactly the same duration, day by day. 310 days, then 309 days. That's not random. There's clearly some underlying structure to these cycles.

The halving events seem to have this weird "magical" effect on timing. Looking back at the data, both altseasons started roughly 235 days after the Bitcoin halving. Cycle II had its halving on July 9, 2016, and altseason started 235 days later on March 1, 2017. Cycle III had its halving on May 11, 2020, and altseason kicked off 237 days later on January 3, 2021. The consistency is striking.

If you apply this pattern to the current cycle — the halving happened on April 19, 2024 — then adding 235 days puts the start of the next altseason right around December 10, 2024. And if you add the typical 310-day duration from previous cycles, you land on October 18, 2025, which was predicted as the cycle top using completely different analysis. Two different methods, same date. That's worth paying attention to.

So the timeline for this cycle looks like: altseason should have started around December 10, 2024, and if the pattern holds, it would last until mid-October 2025. Again, these aren't predictions — they're just patterns from previous cycles. No guarantee they repeat exactly.

When it comes to which coins actually perform best during altseason, the data shows something interesting. Looking at the top performers from the last cycle, most of the coins that had strong years in 2020 went absolutely parabolic in 2021. There were exceptions, but the overall trend suggests it's smarter to bet on established strong projects rather than hunting for unknown "dark horses."

Right now, if you filter for year-to-date performance on coins with market caps above $100 million, you're seeing meme coins dominate the top 10. But if you want to play it safer and focus on projects with $1 billion-plus market caps in actual tech categories — blockchain infrastructure, AI, CeFi — those are worth monitoring too.

The key takeaway? Alt season tends to follow predictable patterns tied to the halving cycle. We should see the next wave concentrate gains in the strongest players, whether that's the leading meme coins or established tech projects. The timing framework gives us a window, but the real opportunity comes from identifying which projects have genuine momentum heading into that window.