If you focus on the more cyclic time frames, the past is actually quite a solid indicator. It offers you enough ammunition to have at least three opportunities to semi-long-term trade the market. There are obviously no guarantees, but if the odds are so much in favor of a potentially profitable trade, it's an opportunity you can't pass on.

The most obvious ones;

Long the start of October.
Short Christmas.
Long the start of April.

I'm currently long already and look forward to what the coming months have to bring.