<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Toni,<div class="">I had a similar problem the other day.</div><div class="">I would suggest you to use the time_axis_label procedure to create the x-axis instead that doing that on your own. It will take care of setting all the resources and produce the needed variables. Plus, it is definitely easier and more portable. </div><div class=""><br class=""></div><div class="">Have a look here <a href="https://www.ncl.ucar.edu/Document/Functions/User_contributed/time_axis_labels.shtml" class="">https://www.ncl.ucar.edu/Document/Functions/User_contributed/time_axis_labels.shtml</a></div><div class=""><br class=""></div><div class="">Example of a plot that I did just using this procedure is attached.</div><div class=""><br class=""></div><div class="">Cheers </div><div class=""></div></body></html>