While it is safe to say that the US retail version was released in calendar week 24, the exact date can't be pinpointed. While the release was originally scheduled for June 12, most contemporary sources speak of June 13. However, Blizzard's website
(archived version from June 2000) speaks of June 14. The two possible reasons for the date differences are confusion about ship vs. release date or that Blizzard was simply late with their news item.