Python Datetime

I am using python datetime library to convert steps into datetime. I noticed that state does not support datetime objects types. Thus datetime can’t be stored as state variables, or passed as messages and they should be converted to jason, list , int or float. As doesn’t allow modifying global variables, each agent should have a behavior to calculate datetime each step or one agent could do this and pass it as message to all other agents. I assume that both are computationally demanding (given the slow performance of hCore when using Python). Could you suggest more efficient way to deal with dates? . I think hEngine better performance but it lack the visualisation, which is very important for validation.