In the event you’ve been following my protection right here on confirmed Google search algorithm updates over time, you’d see that the dates Google provides to the beginning of an replace and, extra typically, the completion of an replace should not all the time so precise.
Like with the December 2022 helpful content update, Google mentioned it type of began on December fifth however mentioned they did not publish about it till the day after as a result of it wasn’t actually noticeable till December sixth.
Additionally, when updates are accomplished, Google typically says that some updates are largely full on a selected day however say some issues can linger.
Simply the opposite day, Google updated its Google updates web page so as to add an finish date to the March 2022 product reviews update. For some purpose it was lacking, I informed Google about it (possibly others did too?) and Google up to date the date to say it completed on April 6, 2022.
However I observed that initially, Google informed us that replace was completed per week in a while April 11, 2022, not April 6, 2022.
— Barry Schwartz (@rustybrick) January 3, 2023
So I requested Google what’s up? Why give us a special date?
John Mueller of Google replied on Mastodon saying, “It is onerous choosing a date for a few of these (particularly afterwards). For many (not all) updates, the replace rolls out, it takes some time to be seen (which is once we name it a begin), and it takes some time to be in most queries / URLs / datacenters (which is once we name it completed). There is not any binary border for begin / cease, it is extra about “begins being seen” and “largely settled down”. It’s kind of like timing when bread rises while you bake it.”
Alan Kent from Google mentioned one thing related:
Once I checked on April eleventh it was “completed”. However it was truly “completed” earlier.
“Achieved” is a gray definition as programs roll out throughout a number of information facilities and and course of backlogs at completely different charges. So its actually do we are saying completed at 99.9% or 99.99% or … (I am completed)
— Alan Kent (@akent99) January 3, 2023
So whereas some Google updates have fairly stable dates, it appears others don’t as a result of they’re extra fluid in how they roll out.
In fact, this could trigger much more confusion and presumably even mistrust on these updates – however a minimum of Google is attempting to elucidate why the dates don’t all the time match into a selected calendar field.
Forum dialogue at Mastodon.