John Mueller and his friends do lots of things in a day what they call “office hours,” known as Google hangouts where they run through the questions which are submitted and answer them.
Now John Mueller might be doing a site clinic and will review your website for an hour in front of everyone.
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The time required for this will be considered as special hours and this will be starting from May 31 st at 10am ET.
It is mainly for brick and mortar sites. If you want your website to be reviewed, then feel free to submit your details in this Google form.