Move xticklabels?

I have a figure made with plot_date. The tickmarklabels on the
x axis are weekday names.

Currently the weekday label is aligned underneath the tickmark, but I would like to align the label to rhe right of the tickmark (halfway to next tick)

I can find examples of how to rotate and resize these strings, but
I cannot move them.

Is there a simple way to do that?

Halldor Bjornsson

Bustadavegur 9 IS150 Reykjavik Iceland.
e: halldor() tel:+354-522600