(originally posted on Google productforums, which has yielded no response)
Can anyone give me any pointers about how Google decides what date to display for the SERPS?
We have noticed that dates being shown for our articles on Google SERPs are 'wrong', in that anything published early in the morning is showing up as the day before.
E.g. we have an article that has a timestamp of
2016-10-13T06:42:49Z set in the sitemap XML, the
datetime attribute of the
time element on the article page, and in
dateModified in the JSON-LD data in the article page.
On our own page, this publish date is correctly showing as 13th October. In google.co.uk SERPS, it shows up as 12th October. I could maybe understand displaying 12th October for dot com users if this was a deliberate choice, but for dot uk users this is definitely misleading.
Whilst investigating, I have also noticed this affects results from Twitter, where I see one date on SERPS and another on Twitter.