DAT files are the latest virus definitions used by our anti-virus products (such as VSE) to identify infected files. McAfee Labs releases an updated DAT file every day (7 days a week).
My apologies Jeremy, I meant what time each day are the newly created DAT files place onto Mcafee download server so that EPO servers can download them. 2am, 3am EST (GMT-5) ???
Unfortunately there's no set time for posting. Generally it's between 3pm and 6pm GMT, but it can be later than that.
If you want to know whenever a Dat posting has occurred, you can get the info via the McAfee Labs Notification Service.
You can sign up for free here: