Sort of. Every arc represents the same or similar period of time, right before and a little bit after the Watanagashi Festival.

Everything makes sense by the time you get to the end, and they say it outright at the beginning of season 2.

I won't spoil it and say why there are alternate retellings, but the series is broken into "Question" and "Answer" arcs. The first season only has one "Answer" arc, and the rest are all question arcs. The second season is primarly "Answer" arcs.

You usually get to see the same or very similar events play out one way as a "Question" arc, and later on a great deal more is revealed, often from a different character's perspective in an "Answer" arc.

There is a flow to the way the arcs are arranged, and the way they are set up is to slowly reveal the truth about everything to the audience and some of the characters themselves.