Predictably, problem reports have been rolling in, all day today, in Blogger Help Forum: Something Is Broken. One noticed problem report concerns the date / time stamp on the comments.
All of the comments on my blog, even on previous posts, now show an incorrect time. I double-checked my setting, it is correctly set my local time.The general consensus appears to be that all comments are now posting as Pacific Time (USA), regardless of the blog time zone setting.
This problem, along with several others, has been reported to Blogger Support - and they are now looking into this issue.
Watch this space for updates.