A Zentanode reward is given at the beginning of each month (epoch). The nature of Zentanodes are very different from that of traditional Bitcoin miners. Zentanodes are not centrally controlled mining machines like Bitcoin. As opposed to traditional miners, Zentanodes do not decrease in value over time. As soon as the largest cities and countries are covered, no more nodes will be needed. In this way, each city or country will be limited to a certain number of nodes.
Rewards are as follows per node and month: