Major Algo change or just Google Dance?

Google changes everyday something. But for my sites they dropped but eventually went back to their place on the google search. Go figure a dance or a major change

 

I see usual changes in google serps, nothing mentionable.

 

Just a little change, but i think it's just normal change, nothing big have happened

 

i think it is just a google dance. my site was out of the SERP for a few days, now it is back. So i think it is just a google dance!