Entry date +/- a day?

I have a few books where the Entry Date is not the same in the Edit Book form as in my Export file. I wonder why?

Example:
Book Id: 72740407 has Entry date 2011-04-27 according to the System part of the Edit Book form.
But in the export file it has 2011-04-28. I'm puzzled.

If I look at the review date, it says: Apr 27, 2011, så I think the export file has it wrong.

Is that the good old timezones issue cropping back up?

Yes, I think so. There's another bug report for that, if we can bump that one and close this one as a duplicate. (Looking now.)

Here we go: https://www.librarything.com/topic/334570#unread

>4 kristilabrie: Yes, thanks for linking the two. I vaguely remembered that there was a similar bug but couldn't locate it. This makes me wonder if the dates in the export file depends on the time of day the export is started? That would be a weird bug.

>5 bnielsen: I don't know if it's that, or perhaps the dates getting exported are going by UTC instead of the member's timezone, or what. I'll ping developers about it again this week.

>6 kristilabrie: Thanks. I'm really puzzled about the behaviour, so if possible I'd like to know what causes it. Obviously the underlying data is not simply a date. Assuming that's it is a time stamp, that is then converted in two different ways by the Edit Book display and the Export Book process.