>Do you mean that the web service requires a date passed in the above format. If the last part is intended to convey the offset then how come it's 17:05 - I'm not aware of a timezone that is different by a factor of minutes....
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>Would the DateTimeOffset structure (rather than DateTime) work ?

It is based on the the time zone of the user, the time zone of the server, the offset, the dailight saving time and the actual time. So, this is why I have to handle it on my own. I did it. I just wasn't sure at first about calculating the offset. This is done now.

Thanks