Translation of vierteljährlich

In the meantime I am listening to some Spanish CDs. They are intended for the car, but no one can tell you when to listen to it, how many times and how often. Please understand that I work a lot.
Your name and Larry's name should be underlined and in blue color suggesting a link to your profile (or with a tiny arrow button suggestion a link). All the profiles should have the same theme.
What time zone are you in or where are you located (city, state, country)? The time and date that you gave is according to your time zone, I guess. But I need to compare it in our log files.