How to retrieve list of timezone from messagebase?

Topic by Tushar Sinha

I am able to fetch a list of timezones from message base using database query as given below.

select distinct text from msgbase_text, msgbase_entries where msgbase_text.msgbase_entry_id = msgbase_entries.msgbase_entry_id and msgbase_entries.folder_id = 65015 and max_length = 50;

Now, I need to fetch it using connect web service for soap.
I have tried out fetching the list using ROQL query but no able to do so.
how can I fetch the list of timezones?