7

According to Shog9, "last seen" is only updated every 15 minutes and thus is not as accurate as other timestamps (e.g. post and comment timestamps): The "last seen" date is only updated every n minutes, where n was 15 the last time I bothered to check. So when this time is recorded, it won't be updated again for at least another 15 ...


2

The last seen is inaccurate intentionally, as mentioned in Laurel's answer. The timestamps on comments, questions, answers are precise. For recently posted ones, the time will be shown as x mins/secs/hours ago, as seen in your screenshot, and when you hold your mouse pointer over it, you'll see the UTC timestamp: 2017-10-20 21:44:42Z.


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