I couldn't find exact time at which oracle releases its java builds. As long as I know java release are not nightly build. Oracle team already plans their release dates for e.g. Java 7 Releases by Date
Oracle only releases periodic early access snapshots of the binaries and documentation like Java Early Access Downloads
Even they haven't mention the release time anywhere.
Do you have any specific use case regarding java release time?
I have to admit I was hoping the updated JAVA Runtime Environment for desktops was going to be available for download when I got to work this morning since 1/14/2014 was the announced release date for this update. Knowing that JRE was going to be updated today, we held off finishing some new computer clone images so we could put the newer JRE version in them. But now I'm kind of like Gaute and wondering what 'time' today it will be released since it hasn't occurred already. If it's not released until much later and we all go home from work today, then it's effectively a 1/15/2014 release date and another day of waiting to complete our project that people are waiting on.
It is amazing to me that they have had the announcement out for the release of this update out for a few months now and, on the day it is supposed to be released, I can't find any information about it and nobody seems to have any answers. We have a product that relies heavily on this product and has to be updated as soon as possible. I have hours of work ahead of me that depend on this update. Very frustrating.
Releases typically are released around 12 noon to 1pm PT (Pacific Time). There are a number of systems to be updated so some come online earlier or later then this time. The target time of course may change from release to release.
Out of curiosity, what is your interest in the time? Are you responsible for pushing the update to many machines?