Exact timing for domain expiry??

[zach]

I know that when you backorder at GoDaddy, before the grab they say:

Quote: If you no longer want us to secure this domain name, and it is a .COM or .NET name, you have until 10:00 a.m. MST on 08/04/2006 to re-assign the backorder credit. If the name is a .BIZ or .US, you have until 9:00 a.m. MST. For .ORG and .INFO names, the time you have available to re-assign the backorder credit can change without notice. There is generally a 24- to 48-hour period in which we can release your originally chosen name.

Not sure whether that indicates the droping time, or some kind of GoDaddy specific deadline.