On Wednesday, September 16, 2026, the VeChainThor network switches on the Interstellar hardfork. The point that matters for you as a holder: the switchover is not a time of day but a block height. Activation happens at block 25,902,540, and when exactly that block falls is for the chain itself to decide. Anyone holding VET on an exchange will lose the ability to deposit and withdraw for a few hours around that point. Anyone running their own node has to swap the software beforehand. Anyone holding their tokens in self-custody needs to do nothing at all.