Ask HN: Why mismatch between dates on HN page and search/API?

Take this story for example: https://news.ycombinator.com/item?id=13969114

At the time of writing, this is listed at "5 hours ago". But when you search for this story over the API or on https://hn.algolia.com/?query=sloppy%20land%20surveyor&sort=byPopularity&prefix=false&page=0&dateRange=all&type=story , it says "a day ago". The API lists the correct date as 1490632191, which also points into the latter direction.

What's up with this? Is this a case of a story being kinda resubmitted by HN staff?