Can I make an epic game which follows the timeline in years to start with but changes over to seaseons per turn for the endgame.

Also is there an xml file in the game with season or month scripts for me to look at as an example? I have been searching but can't find any?

so far it appears there is only yearly increments

I know the game has the ability to make many years, yearly, seasonal, monthly, or weekly turns. The question is can I do more than one in the same scenario?

I am trying to make the standard epic game much longer but in lat game I want to split up the years so the timescale will match the flow of techs and eras during the game.