One of our SP2013 site have publishing feature enabled. There is a site column "Article Date" with field name "ArticleStartDate".
By search "article" in managed properties list I found a field "ArticleStartDateOWSDATE". Out of my expectation its datatype is "text" not datetime. By default, it is mapped to crawled property "ows_q_DATE_ArticleStartDate".
I go ahead to setup search with it. I found the search is weird. In order to search out an item with Article date on 2013/08/24 I have to query with "ArticleStartDateOWSDate:2013/08/23" (no typo here, I have to input 1 day earlier)
Is it a known bug or some of my farm's special issue?