Playing Mogul 2018, I see that the schedules exactly match each team's real life schedule. But I previously played the 1979, 80 and 81 schedules in Mogul 2008, and this wasn't the case. As a result, you sometimes got odd schedules, like 3 or 4 series with the same team in the same month, or playing a team on the road, and then immediately playing that same team at home.
So, what's the first year in the game that the teams use Historically Correct Playing Schedules?