How much time passes with each ranger team in universe?

Has it ever been revealed how much time each ranger team takes up in universe? If I recall correctly, mystic force happens in one year. A lot of the saban era also seems to be a year or two at most but I don't know for sure. Mighty morphin to turbo covers quite a period of time and might be the longest. I'm not sure the exact number but I would say about more than 4 years. Though I'm not entirely sure how long certain power sets were kept.