Page Rank Update chart question (please read)

The Page Rank Chart at the link below shows the next updated prediction to be July 11th which makes no sense, I'am guess it should be October 11th, please comment on this.

http://www.seocompany.ca/pagerank/page-rank-update-list.html

 

I guess it's only a "typo", as the predictions are sorted by date.

 

Those PR update charts are pretty much useless. Toss a coin and you'll be just as accurate.

 

It is not a typo. GDPR means the PR value in the Google Directory.

The prediction was Jul 11 but as you see on the days which is 91 it means that the update is probably delayed some months or something.

 

Surely there must be some kind of formula? They wouldn't update 2 days in a row?

 

They update when they feel like updating / are ready to update. They don't announce it in advance. No one outside Google knows when it will occur.

Those tables are purely historical -- predicting the next update from them is like predicting the next earthquake from a table of previous earthquakes: they'll give you an estimated date plus or minus about 6 months, 6 years, or 6 centuries.

Flip a coin or blindfold yourself and stick a pin in a calendar. Just as accurate.

 

GDPR appears to be changing now. We were listed in DMOZ, but not in Google directory a couple of weeks ago. We are now in Google directory and also have been assigned a pagerank!