Currently I’m afraid there’s no way to do this. You could take a look at this topic XAxis MajorGridLines start date. I believe we will have this feature in SciChart 2.0 for few people were asking about it.
Update June 2014: TickProvider API
As an update for interested parties, it is now possible to configure the exact output of the Axis (configure which GridLines, TickMarks, TickLabels) by using the TickProvider API.
We have a similar answer on Configuring the Axis Ticks here.
Also a KB article on Advanced Tick Frequency Overriding using the TickProvider API which is new to SciChart v3.0.
Hope this helps
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