A technical analysis suggests that the altcoin market, including Ethereum and Dogecoin, may experience a 217-day altcoin season.The analysis highlights the importance of holding a critical support level for the altcoin season to begin.The market conditions align with Fibonacci time sequences, indicating a potential market shift for altcoin prices.The analyst predicts that the altcoin market could rally for 217 days, peaking by October 13, 2025.