You're correct, it is the "USER_REGISTERED_ON" field in the "_USERS" table; the entry is the date in Unix Time.

There are several online converters that will allow you to convert to/from Unix Time (one such converter is available on Online Conversion).

The reason that Unix Time is used here is that we can convert the value to any format a user could want to display it as by using the built in php date parameter.

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
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