Tonight (September 22) at 11:00 Beijing time is the activation time for the Helicon mainnet. A-Jian previously broke this down in detail, and $AVAX has already been pumped for a round ahead of this upgrade. So if you’re verifying or delegating, you can check two specific things tonight: whether the mainnet is getting stuck, and whether validators are going offline in large numbers. If you’re just a trader, tonight’s upgrade likely won’t create any buy/sell entry points.