Likely indicates a "daily update" or a "new release" category on the original hosting site.

In 2015, digital "exclusives" were a popular way for HD streaming sites to drive subscriptions. These 15-minute clips were often "web-only" edits of longer feature films.

If you are trying to find the specific title or actress associated with this code: Search for "JAV releases March 13 2015."

Because this string is highly specialized and resembles a database entry or a specific video upload code, a "long article" would likely be filled with filler. Instead, Breaking Down the Code

Sites like JAVLibrary often index these specific file strings under their "Comments" or "Search" sections.

This is almost certainly a date stamp, representing March 13, 2015 .