What's up with that? I have stumbled upon this situation a couple times already and I am wondering if it is a bug.
I do a job search, in the search results page it reads a job is posted 14 minutes ago, then when I go in to see more details about that job it reads "Posted 5 days ago."
I checked and wasn't able to replicate the issue where the job show the difference between few minutes and several days. There may be a slight delay with the time stamp refreshing in the Job Search but it's maximum an hour, not several days. Could you please send us a screenshot of what you see?