Generally, for plotting DateTime data on the horizontal axis you can use DateTimeContinuousAxis which may be configured like this:
As for the Daylight saving time support, the control relies on the .NET Framework and does not provide specific options for customizing its behavior.
First I would recommend reading this
blog post on MSDN, detailing the problems associated with DST. It will give you some ideas about how to deal with it.
Next for RadCartesianChart you can use a label template with a converter to change axis labels presentation as per your requirement.
I have attached a small project were you can test your solution.
I hope this helps.
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