Phemex will support the BNB Smart Chain (BEP20) Network Upgrade and Hard Fork per the following timeline:The BNB Smart Chain (BEP20) network upgrade and hard fork will take place at 08:00 UTC on January 23, 2024.

Source: https://phemex.com/announcements/phemex-will-support-the-bnb-smart-chain-bep20-network-upgrades-hard-forks