I'll add these to the project README this weekend but very briefly:
- daily #Wikipedia editor activity (see past posts in this thread!) for all these seven languages exhibits a long-term positive autocorrelation (its a long-term memory process with a Hurst exponent probably ~1).
- Most languages have a strong weekly and yearly cyclicity.
- However, there are definitely many seasonal cycles (cycles within cycles) that govern autocorrelation.

Predicting these is going to be fun!!