The total block reward for ZEC will be halved from 6.25 ZEC to 3.125 ZEC when the block height reaches 1,046,400, which is estimated to happen on November 18, 2020 UTC. The portion of the ZEC block reward miners receive will be halved from 5 ZEC to 2.5 ZEC.

Please take this into consideration when planning your mining activities, as your revenue from mining ZEC will be reduced.